./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC --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 45b5e563126a14477abee608666ee2567b23098b .......................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2021-10-11 00:26:45,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:45,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:45,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:45,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:45,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:45,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:45,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:45,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:45,914 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:45,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:45,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:45,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:45,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:45,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:45,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:45,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:45,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:45,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:45,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:45,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:45,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:45,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:45,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:45,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:45,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:45,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:45,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:45,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:45,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:45,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:45,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:45,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:45,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:45,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:45,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:45,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:45,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:45,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:45,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:45,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:45,985 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:26:46,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:46,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:46,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:46,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:46,037 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:46,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:46,037 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:46,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:26:46,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:46,038 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:46,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:26:46,040 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:26:46,040 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:26:46,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:46,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:46,041 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:46,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:26:46,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:46,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:46,043 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:26:46,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:46,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:46,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:26:46,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:26:46,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:26:46,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:26:46,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:26:46,055 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:46,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45b5e563126a14477abee608666ee2567b23098b [2021-10-11 00:26:46,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:46,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:46,372 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:46,374 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:46,374 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:46,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c [2021-10-11 00:26:46,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/data/c0a2ab3aa/74b5d0ec2c514e9d9dedc7fb7c512ce2/FLAG25d8db2ba [2021-10-11 00:26:46,963 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:46,965 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c [2021-10-11 00:26:46,978 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/data/c0a2ab3aa/74b5d0ec2c514e9d9dedc7fb7c512ce2/FLAG25d8db2ba [2021-10-11 00:26:47,305 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/data/c0a2ab3aa/74b5d0ec2c514e9d9dedc7fb7c512ce2 [2021-10-11 00:26:47,308 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:47,309 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:47,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:47,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:47,315 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:47,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a3ea2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47, skipping insertion in model container [2021-10-11 00:26:47,317 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,325 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:47,341 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:47,518 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c[555,568] [2021-10-11 00:26:47,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:47,542 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:47,556 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound50.c[555,568] [2021-10-11 00:26:47,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:47,579 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:47,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47 WrapperNode [2021-10-11 00:26:47,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:47,581 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:47,582 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:47,582 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:47,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:47,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:47,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:47,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:47,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,627 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... [2021-10-11 00:26:47,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:47,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:47,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:47,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:47,638 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:26:47,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:47,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:47,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:47,921 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:47,922 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-11 00:26:47,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:47 BoogieIcfgContainer [2021-10-11 00:26:47,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:47,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:26:47,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:26:47,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:26:47,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:47" (1/3) ... [2021-10-11 00:26:47,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33245ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:47, skipping insertion in model container [2021-10-11 00:26:47,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:47" (2/3) ... [2021-10-11 00:26:47,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33245ecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:47, skipping insertion in model container [2021-10-11 00:26:47,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:47" (3/3) ... [2021-10-11 00:26:47,932 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound50.c [2021-10-11 00:26:47,946 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:26:47,948 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 00:26:47,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 00:26:47,981 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:26:47,981 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:26:47,981 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:26:47,982 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:47,982 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:47,982 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:26:47,982 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:47,983 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:26:47,995 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-10-11 00:26:47,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:26:48,000 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:48,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:48,001 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:48,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:48,007 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-11 00:26:48,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:48,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358808923] [2021-10-11 00:26:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:48,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:48,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358808923] [2021-10-11 00:26:48,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:48,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:26:48,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100247368] [2021-10-11 00:26:48,226 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:26:48,226 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:48,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:26:48,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:26:48,248 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2021-10-11 00:26:48,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:48,265 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-10-11 00:26:48,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:26:48,269 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-10-11 00:26:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:48,286 INFO L225 Difference]: With dead ends: 35 [2021-10-11 00:26:48,286 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 00:26:48,290 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 [2021-10-11 00:26:48,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 00:26:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 00:26:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 00:26:48,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-11 00:26:48,336 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-11 00:26:48,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:48,336 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-11 00:26:48,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:26:48,338 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-11 00:26:48,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 00:26:48,339 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:48,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:48,340 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:26:48,340 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:48,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-11 00:26:48,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:48,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697072472] [2021-10-11 00:26:48,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:48,385 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:48,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886966031] [2021-10-11 00:26:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/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 [2021-10-11 00:26:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:48,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-11 00:26:48,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:48,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697072472] [2021-10-11 00:26:48,732 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:48,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886966031] [2021-10-11 00:26:48,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:48,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:26:48,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323540825] [2021-10-11 00:26:48,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:26:48,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:48,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:26:48,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:26:48,748 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2021-10-11 00:26:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:48,909 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-11 00:26:48,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:26:48,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2021-10-11 00:26:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:48,911 INFO L225 Difference]: With dead ends: 22 [2021-10-11 00:26:48,911 INFO L226 Difference]: Without dead ends: 20 [2021-10-11 00:26:48,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:26:48,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-11 00:26:48,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-10-11 00:26:48,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 00:26:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-11 00:26:48,916 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-10-11 00:26:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:48,916 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-11 00:26:48,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:26:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-11 00:26:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:26:48,917 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:48,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:49,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:26:49,143 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:49,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:49,143 INFO L82 PathProgramCache]: Analyzing trace with hash 636924791, now seen corresponding path program 1 times [2021-10-11 00:26:49,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:49,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107355486] [2021-10-11 00:26:49,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:49,159 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:49,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131381673] [2021-10-11 00:26:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:49,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:49,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:49,265 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:49,265 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:26:49,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:49,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:26:49 BoogieIcfgContainer [2021-10-11 00:26:49,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:26:49,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:26:49,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:26:49,505 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:26:49,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:47" (3/4) ... [2021-10-11 00:26:49,508 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:26:49,582 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ac5d830a-0d2e-45f9-895f-8cfe2cb2662f/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:26:49,588 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:26:49,590 INFO L168 Benchmark]: Toolchain (without parser) took 2279.73 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 79.8 MB in the beginning and 101.0 MB in the end (delta: -21.2 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,595 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 89.1 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:49,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.04 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 89.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.45 ms. Allocated memory is still 115.3 MB. Free memory was 89.7 MB in the beginning and 87.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,599 INFO L168 Benchmark]: Boogie Preprocessor took 20.50 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 87.0 MB in the end (delta: 871.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,599 INFO L168 Benchmark]: RCFGBuilder took 287.89 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 74.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,600 INFO L168 Benchmark]: TraceAbstraction took 1578.64 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 73.9 MB in the beginning and 103.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,601 INFO L168 Benchmark]: Witness Printer took 83.47 ms. Allocated memory is still 144.7 MB. Free memory was 103.1 MB in the beginning and 101.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:49,604 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 115.3 MB. Free memory was 89.1 MB in the beginning and 89.1 MB in the end (delta: 29.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.04 ms. Allocated memory is still 115.3 MB. Free memory was 79.6 MB in the beginning and 89.7 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.45 ms. Allocated memory is still 115.3 MB. Free memory was 89.7 MB in the beginning and 87.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.50 ms. Allocated memory is still 115.3 MB. Free memory was 87.9 MB in the beginning and 87.0 MB in the end (delta: 871.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 287.89 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 74.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1578.64 ms. Allocated memory was 115.3 MB in the beginning and 144.7 MB in the end (delta: 29.4 MB). Free memory was 73.9 MB in the beginning and 103.1 MB in the end (delta: -29.2 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. * Witness Printer took 83.47 ms. Allocated memory is still 144.7 MB. Free memory was 103.1 MB in the beginning and 101.0 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 19 SDslu, 22 SDs, 0 SdLazy, 28 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 488 SizeOfPredicates, 6 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...