./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/freire1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 b056c40c352516a88a49e796700e87b5fe62c1cb ...................................................................................................................................................................................................................................... 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_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/freire1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 b056c40c352516a88a49e796700e87b5fe62c1cb ................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-69874e2 [2020-12-01 15:34:55,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:34:55,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:34:55,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:34:55,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:34:55,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:34:55,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:34:55,762 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:34:55,765 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:34:55,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:34:55,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:34:55,769 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:34:55,769 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:34:55,771 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:34:55,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:34:55,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:34:55,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:34:55,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:34:55,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:34:55,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:34:55,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:34:55,791 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:34:55,793 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:34:55,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:34:55,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:34:55,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:34:55,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:34:55,806 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:34:55,807 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:34:55,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:34:55,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:34:55,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:34:55,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:34:55,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:34:55,815 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:34:55,815 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:34:55,816 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:34:55,817 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:34:55,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:34:55,818 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:34:55,819 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:34:55,821 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:34:55,869 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:34:55,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:34:55,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:34:55,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:34:55,873 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:34:55,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:34:55,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:34:55,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:34:55,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:34:55,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:34:55,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:34:55,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:34:55,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:34:55,876 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:34:55,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:34:55,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:34:55,877 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:34:55,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:34:55,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:34:55,878 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:34:55,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:34:55,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:34:55,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:34:55,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:34:55,879 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:34:55,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:34:55,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:34:55,880 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:34:55,880 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:34:55,880 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_20099338-a071-41ae-a65a-0363fc0c4d89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b056c40c352516a88a49e796700e87b5fe62c1cb [2020-12-01 15:34:56,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:34:56,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:34:56,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:34:56,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:34:56,198 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:34:56,199 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire1.c [2020-12-01 15:34:56,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/5111d159f/4cb634693ad443a8926ba8776abd3b51/FLAG3bf141499 [2020-12-01 15:34:56,751 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:34:56,751 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/sv-benchmarks/c/nla-digbench/freire1.c [2020-12-01 15:34:56,757 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/5111d159f/4cb634693ad443a8926ba8776abd3b51/FLAG3bf141499 [2020-12-01 15:34:57,242 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/5111d159f/4cb634693ad443a8926ba8776abd3b51 [2020-12-01 15:34:57,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:34:57,251 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:34:57,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:34:57,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:34:57,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:34:57,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@588d281 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57, skipping insertion in model container [2020-12-01 15:34:57,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,269 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:34:57,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:34:57,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:34:57,538 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:34:57,570 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:34:57,589 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:34:57,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57 WrapperNode [2020-12-01 15:34:57,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:34:57,595 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:34:57,595 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:34:57,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:34:57,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,643 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:34:57,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:34:57,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:34:57,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:34:57,654 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,663 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... [2020-12-01 15:34:57,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:34:57,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:34:57,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:34:57,676 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:34:57,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 [2020-12-01 15:34:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:34:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:34:57,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:34:57,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:34:58,043 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:34:58,045 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-01 15:34:58,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:34:58 BoogieIcfgContainer [2020-12-01 15:34:58,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:34:58,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:34:58,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:34:58,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:34:58,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:34:57" (1/3) ... [2020-12-01 15:34:58,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8fffa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:34:58, skipping insertion in model container [2020-12-01 15:34:58,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:34:57" (2/3) ... [2020-12-01 15:34:58,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a8fffa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:34:58, skipping insertion in model container [2020-12-01 15:34:58,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:34:58" (3/3) ... [2020-12-01 15:34:58,058 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1.c [2020-12-01 15:34:58,070 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:34:58,073 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:34:58,085 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:34:58,110 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:34:58,110 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:34:58,111 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:34:58,111 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:34:58,111 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:34:58,111 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:34:58,111 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:34:58,111 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:34:58,126 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-01 15:34:58,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 15:34:58,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:34:58,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-01 15:34:58,133 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:34:58,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:34:58,139 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-01 15:34:58,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:34:58,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981890612] [2020-12-01 15:34:58,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:34:58,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:34:58,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:34:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:34:58,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:34:58,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:34:58,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:34:58,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:34:58,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:34:58 BoogieIcfgContainer [2020-12-01 15:34:58,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:34:58,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:34:58,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:34:58,336 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:34:58,336 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:34:58" (3/4) ... [2020-12-01 15:34:58,340 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:34:58,340 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:34:58,342 INFO L168 Benchmark]: Toolchain (without parser) took 1094.66 ms. Allocated memory is still 136.3 MB. Free memory was 111.6 MB in the beginning and 86.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:58,343 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 92.3 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:34:58,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.04 ms. Allocated memory is still 136.3 MB. Free memory was 111.4 MB in the beginning and 113.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:58,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 136.3 MB. Free memory was 113.0 MB in the beginning and 111.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:58,346 INFO L168 Benchmark]: Boogie Preprocessor took 29.53 ms. Allocated memory is still 136.3 MB. Free memory was 111.6 MB in the beginning and 110.6 MB in the end (delta: 968.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:34:58,347 INFO L168 Benchmark]: RCFGBuilder took 371.80 ms. Allocated memory is still 136.3 MB. Free memory was 110.6 MB in the beginning and 99.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:58,347 INFO L168 Benchmark]: TraceAbstraction took 285.75 ms. Allocated memory is still 136.3 MB. Free memory was 98.7 MB in the beginning and 87.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:34:58,348 INFO L168 Benchmark]: Witness Printer took 4.75 ms. Allocated memory is still 136.3 MB. Free memory was 87.0 MB in the beginning and 86.7 MB in the end (delta: 270.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:34:58,352 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 92.3 MB. Free memory is still 52.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 339.04 ms. Allocated memory is still 136.3 MB. Free memory was 111.4 MB in the beginning and 113.2 MB in the end (delta: -1.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.53 ms. Allocated memory is still 136.3 MB. Free memory was 113.0 MB in the beginning and 111.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.53 ms. Allocated memory is still 136.3 MB. Free memory was 111.6 MB in the beginning and 110.6 MB in the end (delta: 968.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 371.80 ms. Allocated memory is still 136.3 MB. Free memory was 110.6 MB in the beginning and 99.3 MB in the end (delta: 11.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 285.75 ms. Allocated memory is still 136.3 MB. Free memory was 98.7 MB in the beginning and 87.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.75 ms. Allocated memory is still 136.3 MB. Free memory was 87.0 MB in the beginning and 86.7 MB in the end (delta: 270.0 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 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 [L31] COND TRUE 1 [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire1.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-69874e2 [2020-12-01 15:35:00,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:35:00,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:35:00,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:35:00,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:35:00,936 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:35:00,939 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:35:00,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:35:00,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:35:00,957 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:35:00,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:35:00,964 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:35:00,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:35:00,966 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:35:00,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:35:00,968 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:35:00,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:35:00,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:35:00,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:35:00,975 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:35:00,977 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:35:00,978 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:35:00,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:35:00,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:35:00,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:35:00,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:35:00,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:35:00,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:35:00,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:35:00,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:35:00,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:35:00,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:35:00,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:35:00,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:35:00,996 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:35:00,996 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:35:00,997 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:35:00,997 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:35:00,998 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:35:00,999 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:35:01,000 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:35:01,002 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:35:01,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:35:01,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:35:01,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:35:01,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:35:01,042 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:35:01,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:35:01,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:35:01,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:35:01,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:35:01,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:35:01,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:35:01,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:35:01,044 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:35:01,044 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:35:01,044 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:35:01,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:35:01,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:35:01,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:35:01,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:35:01,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:35:01,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:35:01,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:35:01,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:35:01,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:35:01,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:35:01,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:35:01,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:35:01,047 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:35:01,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:35:01,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:35:01,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:35:01,048 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_20099338-a071-41ae-a65a-0363fc0c4d89/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b056c40c352516a88a49e796700e87b5fe62c1cb [2020-12-01 15:35:01,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:35:01,425 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:35:01,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:35:01,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:35:01,430 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:35:01,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/../../sv-benchmarks/c/nla-digbench/freire1.c [2020-12-01 15:35:01,511 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/4b0d57c34/55eb9cf0b23e4504a96e941ab6ba6840/FLAG44c4e203e [2020-12-01 15:35:02,052 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:35:02,053 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/sv-benchmarks/c/nla-digbench/freire1.c [2020-12-01 15:35:02,060 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/4b0d57c34/55eb9cf0b23e4504a96e941ab6ba6840/FLAG44c4e203e [2020-12-01 15:35:02,412 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/data/4b0d57c34/55eb9cf0b23e4504a96e941ab6ba6840 [2020-12-01 15:35:02,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:35:02,416 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:35:02,417 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:35:02,417 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:35:02,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:35:02,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6568269f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02, skipping insertion in model container [2020-12-01 15:35:02,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:35:02,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:35:02,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:35:02,707 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:35:02,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:35:02,787 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:35:02,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02 WrapperNode [2020-12-01 15:35:02,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:35:02,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:35:02,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:35:02,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:35:02,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,826 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:35:02,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:35:02,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:35:02,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:35:02,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,863 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... [2020-12-01 15:35:02,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:35:02,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:35:02,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:35:02,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:35:02,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 [2020-12-01 15:35:02,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:35:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:35:02,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:35:02,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:35:10,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:35:10,906 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-01 15:35:10,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:35:10 BoogieIcfgContainer [2020-12-01 15:35:10,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:35:10,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:35:10,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:35:10,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:35:10,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:35:02" (1/3) ... [2020-12-01 15:35:10,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618c6904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:35:10, skipping insertion in model container [2020-12-01 15:35:10,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:35:02" (2/3) ... [2020-12-01 15:35:10,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@618c6904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:35:10, skipping insertion in model container [2020-12-01 15:35:10,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:35:10" (3/3) ... [2020-12-01 15:35:10,918 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1.c [2020-12-01 15:35:10,935 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:35:10,939 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:35:10,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:35:10,990 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:35:10,990 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:35:10,990 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:35:10,991 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:35:10,991 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:35:10,991 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:35:10,991 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:35:10,991 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:35:11,006 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-01 15:35:11,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-01 15:35:11,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:35:11,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-01 15:35:11,014 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:35:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:35:11,021 INFO L82 PathProgramCache]: Analyzing trace with hash 28699754, now seen corresponding path program 1 times [2020-12-01 15:35:11,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:35:11,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754852535] [2020-12-01 15:35:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 [2020-12-01 15:35:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:35:13,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:35:13,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:35:15,549 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from false [2020-12-01 15:35:25,870 WARN L838 $PredicateComparison]: unable to prove that (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 ULTIMATE.start_main_~a~0) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2020-12-01 15:35:32,026 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from false [2020-12-01 15:35:34,061 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_prenex_1) .cse0)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) is different from true [2020-12-01 15:35:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:35:34,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:35:36,157 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-12-01 15:35:38,210 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-01 15:35:40,261 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2020-12-01 15:35:42,303 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2020-12-01 15:35:42,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:35:42,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754852535] [2020-12-01 15:35:42,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:35:42,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-12-01 15:35:42,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637407551] [2020-12-01 15:35:42,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:35:42,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:35:42,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:35:42,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=9, Unknown=8, NotChecked=40, Total=72 [2020-12-01 15:35:42,329 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 9 states. [2020-12-01 15:35:44,376 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from false [2020-12-01 15:35:46,422 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from true [2020-12-01 15:35:48,467 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from false [2020-12-01 15:35:50,519 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from true [2020-12-01 15:35:52,567 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (not .cse0) (or (and (exists ((v_prenex_1 (_ FloatingPoint 11 53))) (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 v_prenex_1) .cse1)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_prenex_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32)))) .cse0) (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse2 ULTIMATE.start_main_~a~0) .cse2)) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))))) is different from false [2020-12-01 15:36:14,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:36:14,389 INFO L93 Difference]: Finished difference Result 33 states and 47 transitions. [2020-12-01 15:36:14,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:36:14,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 5 [2020-12-01 15:36:14,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:36:14,456 INFO L225 Difference]: With dead ends: 33 [2020-12-01 15:36:14,456 INFO L226 Difference]: Without dead ends: 16 [2020-12-01 15:36:14,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6s TimeCoverageRelationStatistics Valid=21, Invalid=10, Unknown=13, NotChecked=88, Total=132 [2020-12-01 15:36:14,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-01 15:36:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2020-12-01 15:36:14,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-01 15:36:14,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-12-01 15:36:14,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-12-01 15:36:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:36:14,494 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-12-01 15:36:14,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:36:14,494 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-12-01 15:36:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:36:14,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:36:14,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:36:14,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:36:14,697 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:36:14,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:36:14,698 INFO L82 PathProgramCache]: Analyzing trace with hash 301719636, now seen corresponding path program 1 times [2020-12-01 15:36:14,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:36:14,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297869589] [2020-12-01 15:36:14,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 [2020-12-01 15:36:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:36:15,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 15:36:15,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:36:17,266 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2020-12-01 15:36:19,322 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from true [2020-12-01 15:36:21,384 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-12-01 15:36:23,439 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-12-01 15:36:29,643 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-12-01 15:36:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:36:29,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:36:31,737 WARN L838 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from false [2020-12-01 15:36:33,793 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from true [2020-12-01 15:36:35,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:36:35,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1297869589] [2020-12-01 15:36:35,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:36:35,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-12-01 15:36:35,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864551666] [2020-12-01 15:36:35,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 15:36:35,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:36:35,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 15:36:35,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=4, Unknown=7, NotChecked=20, Total=42 [2020-12-01 15:36:35,894 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-12-01 15:36:40,173 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from false [2020-12-01 15:36:42,233 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from true [2020-12-01 15:36:44,291 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-12-01 15:36:44,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:36:44,299 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-12-01 15:36:44,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:36:44,299 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-01 15:36:44,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:36:44,300 INFO L225 Difference]: With dead ends: 13 [2020-12-01 15:36:44,300 INFO L226 Difference]: Without dead ends: 9 [2020-12-01 15:36:44,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.6s TimeCoverageRelationStatistics Valid=15, Invalid=5, Unknown=10, NotChecked=42, Total=72 [2020-12-01 15:36:44,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-01 15:36:44,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-01 15:36:44,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-01 15:36:44,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-12-01 15:36:44,305 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-12-01 15:36:44,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:36:44,306 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-12-01 15:36:44,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 15:36:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-12-01 15:36:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 15:36:44,307 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:36:44,307 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-01 15:36:44,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:36:44,518 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:36:44,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:36:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash 301759358, now seen corresponding path program 1 times [2020-12-01 15:36:44,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:36:44,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813018541] [2020-12-01 15:36:44,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/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 [2020-12-01 15:36:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:36:54,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:37:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:37:09,918 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:37:10,002 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 15:37:10,002 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:37:10,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:37:10,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:37:10 BoogieIcfgContainer [2020-12-01 15:37:10,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:37:10,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:37:10,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:37:10,228 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:37:10,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:35:10" (3/4) ... [2020-12-01 15:37:10,231 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:37:10,265 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_20099338-a071-41ae-a65a-0363fc0c4d89/bin/uautomizer/witness.graphml [2020-12-01 15:37:10,265 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:37:10,267 INFO L168 Benchmark]: Toolchain (without parser) took 127850.22 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 48.7 MB in the beginning and 55.5 MB in the end (delta: -6.9 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:37:10,268 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 47.5 MB in the end (delta: 50.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:37:10,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.80 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 48.7 MB in the end (delta: -269.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:37:10,269 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 65.0 MB. Free memory was 48.7 MB in the beginning and 47.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:37:10,270 INFO L168 Benchmark]: Boogie Preprocessor took 38.93 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 46.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:37:10,273 INFO L168 Benchmark]: RCFGBuilder took 8018.58 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 34.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:37:10,275 INFO L168 Benchmark]: TraceAbstraction took 119317.70 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 33.6 MB in the beginning and 57.6 MB in the end (delta: -24.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2020-12-01 15:37:10,276 INFO L168 Benchmark]: Witness Printer took 37.70 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 55.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:37:10,281 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 65.0 MB. Free memory was 47.6 MB in the beginning and 47.5 MB in the end (delta: 50.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.80 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 48.7 MB in the end (delta: -269.7 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.57 ms. Allocated memory is still 65.0 MB. Free memory was 48.7 MB in the beginning and 47.3 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.93 ms. Allocated memory is still 65.0 MB. Free memory was 47.1 MB in the beginning and 46.0 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 8018.58 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 34.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 119317.70 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 33.6 MB in the beginning and 57.6 MB in the end (delta: -24.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * Witness Printer took 37.70 ms. Allocated memory is still 96.5 MB. Free memory was 57.6 MB in the beginning and 55.5 MB in the end (delta: 2.1 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; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 [L31] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L34] COND FALSE !(!(x > r)) [L36] x = x - r [L37] r = r + 1 [L31] COND TRUE 1 [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire1.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 119.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 40.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 5 SDslu, 31 SDs, 0 SdLazy, 5 SolverSat, 2 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 23.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 13.1s SatisfiabilityAnalysisTime, 49.5s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 22 ConstructedInterpolants, 4 QuantifiedInterpolants, 2339 SizeOfPredicates, 17 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! Received shutdown request...