./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/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 9fcd45ede82cce2814a3d32a6059b5373fc6da41 .................................................................................................................................................................................................................................................................................... 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_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/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 9fcd45ede82cce2814a3d32a6059b5373fc6da41 ................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:15:30,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:15:30,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:15:30,464 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:15:30,465 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:15:30,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:15:30,474 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:15:30,477 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:15:30,479 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:15:30,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:15:30,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:15:30,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:15:30,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:15:30,498 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:15:30,500 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:15:30,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:15:30,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:15:30,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:15:30,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:15:30,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:15:30,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:15:30,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:15:30,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:15:30,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:15:30,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:15:30,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:15:30,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:15:30,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:15:30,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:15:30,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:15:30,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:15:30,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:15:30,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:15:30,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:15:30,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:15:30,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:15:30,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:15:30,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:15:30,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:15:30,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:15:30,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:15:30,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:15:30,619 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:15:30,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:15:30,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:15:30,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:15:30,625 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:15:30,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:15:30,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:15:30,626 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:15:30,626 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:15:30,626 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:15:30,627 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:15:30,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:15:30,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:15:30,628 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:15:30,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:15:30,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:15:30,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:15:30,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:15:30,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:15:30,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:15:30,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:15:30,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:30,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:15:30,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:15:30,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:15:30,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:15:30,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:15:30,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:15:30,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:15:30,633 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_9eef1775-4831-4d9b-a555-1e1cbea5feda/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fcd45ede82cce2814a3d32a6059b5373fc6da41 [2020-11-30 01:15:30,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:15:30,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:15:31,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:15:31,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:15:31,006 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:15:31,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2020-11-30 01:15:31,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/a608c4a97/b917dfea039a4fd5b26a967dd6b2a222/FLAG8f042d75b [2020-11-30 01:15:31,662 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:15:31,663 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2020-11-30 01:15:31,671 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/a608c4a97/b917dfea039a4fd5b26a967dd6b2a222/FLAG8f042d75b [2020-11-30 01:15:32,036 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/a608c4a97/b917dfea039a4fd5b26a967dd6b2a222 [2020-11-30 01:15:32,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:15:32,041 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:15:32,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:32,044 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:15:32,048 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:15:32,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e3e550 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32, skipping insertion in model container [2020-11-30 01:15:32,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,061 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:15:32,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:15:32,323 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:32,335 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:15:32,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:32,388 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:15:32,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32 WrapperNode [2020-11-30 01:15:32,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:32,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:32,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:15:32,392 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:15:32,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:32,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:15:32,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:15:32,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:15:32,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,462 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... [2020-11-30 01:15:32,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:15:32,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:15:32,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:15:32,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:15:32,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:32,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:15:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:15:32,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:15:32,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:15:32,926 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:15:32,927 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 01:15:32,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:32 BoogieIcfgContainer [2020-11-30 01:15:32,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:15:32,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:15:32,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:15:32,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:15:32,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:15:32" (1/3) ... [2020-11-30 01:15:32,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a8db42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:32, skipping insertion in model container [2020-11-30 01:15:32,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:32" (2/3) ... [2020-11-30 01:15:32,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a8db42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:32, skipping insertion in model container [2020-11-30 01:15:32,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:32" (3/3) ... [2020-11-30 01:15:32,958 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2020-11-30 01:15:32,975 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:15:32,980 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:15:32,992 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:15:33,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:15:33,020 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:15:33,020 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:15:33,020 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:15:33,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:15:33,021 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:15:33,021 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:15:33,021 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:15:33,039 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 01:15:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:15:33,045 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:33,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:33,047 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:33,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:33,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 01:15:33,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:33,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520553881] [2020-11-30 01:15:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:33,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:33,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:33,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520553881] [2020-11-30 01:15:33,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:33,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:15:33,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900167501] [2020-11-30 01:15:33,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:15:33,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:15:33,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:15:33,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:15:33,240 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 01:15:33,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:33,269 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 01:15:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:15:33,271 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:15:33,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:33,282 INFO L225 Difference]: With dead ends: 63 [2020-11-30 01:15:33,282 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:15:33,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:15:33,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:15:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 01:15:33,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:15:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 01:15:33,354 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 01:15:33,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:33,355 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 01:15:33,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:15:33,356 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 01:15:33,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:15:33,358 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:33,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:33,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:15:33,359 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:33,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:33,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 01:15:33,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:15:33,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036873419] [2020-11-30 01:15:33,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:15:33,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:15:33,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [722680911] [2020-11-30 01:15:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:15:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:15:33,458 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:15:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:15:33,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:15:33,530 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:15:33,531 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:15:33,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 01:15:33,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:15:33 BoogieIcfgContainer [2020-11-30 01:15:33,779 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:15:33,779 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:15:33,779 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:15:33,780 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:15:33,780 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:32" (3/4) ... [2020-11-30 01:15:33,783 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:15:33,784 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:15:33,786 INFO L168 Benchmark]: Toolchain (without parser) took 1743.64 ms. Allocated memory is still 98.6 MB. Free memory was 67.3 MB in the beginning and 31.4 MB in the end (delta: 35.9 MB). Peak memory consumption was 32.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:33,811 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:33,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.41 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 75.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:33,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 73.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:33,815 INFO L168 Benchmark]: Boogie Preprocessor took 46.12 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:33,817 INFO L168 Benchmark]: RCFGBuilder took 448.56 ms. Allocated memory is still 98.6 MB. Free memory was 72.4 MB in the beginning and 58.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:33,818 INFO L168 Benchmark]: TraceAbstraction took 846.34 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 31.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:15:33,820 INFO L168 Benchmark]: Witness Printer took 4.46 ms. Allocated memory is still 98.6 MB. Free memory is still 31.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:15:33,826 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 77.6 MB. Free memory was 35.3 MB in the beginning and 35.3 MB in the end (delta: 37.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.41 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 75.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.19 ms. Allocated memory is still 98.6 MB. Free memory was 75.6 MB in the beginning and 73.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.12 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 72.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 448.56 ms. Allocated memory is still 98.6 MB. Free memory was 72.4 MB in the beginning and 58.2 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 846.34 ms. Allocated memory is still 98.6 MB. Free memory was 57.7 MB in the beginning and 31.4 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 4.46 ms. Allocated memory is still 98.6 MB. Free memory is still 31.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:15:36,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:15:36,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:15:36,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:15:36,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:15:36,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:15:36,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:15:36,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:15:36,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:15:36,950 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:15:36,952 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:15:36,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:15:36,974 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:15:36,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:15:36,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:15:36,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:15:36,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:15:36,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:15:36,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:15:36,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:15:36,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:15:36,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:15:36,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:15:36,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:15:37,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:15:37,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:15:37,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:15:37,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:15:37,003 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:15:37,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:15:37,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:15:37,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:15:37,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:15:37,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:15:37,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:15:37,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:15:37,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:15:37,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:15:37,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:15:37,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:15:37,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:15:37,015 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 01:15:37,067 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:15:37,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:15:37,070 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:15:37,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:15:37,072 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:15:37,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:15:37,073 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:15:37,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:15:37,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:15:37,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:15:37,075 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:15:37,075 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:15:37,075 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:15:37,076 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:15:37,076 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:15:37,076 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:15:37,076 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:15:37,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:15:37,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:15:37,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:15:37,077 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:15:37,078 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:15:37,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:37,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:15:37,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:15:37,079 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:15:37,079 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 01:15:37,079 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:15:37,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:15:37,080 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:15:37,080 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:15:37,080 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_9eef1775-4831-4d9b-a555-1e1cbea5feda/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fcd45ede82cce2814a3d32a6059b5373fc6da41 [2020-11-30 01:15:37,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:15:37,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:15:37,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:15:37,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:15:37,571 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:15:37,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2020-11-30 01:15:37,666 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/3de37a496/fe013d0632e94672b1aaff2bf9439294/FLAG68c7408b2 [2020-11-30 01:15:38,340 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:15:38,340 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound1.c [2020-11-30 01:15:38,354 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/3de37a496/fe013d0632e94672b1aaff2bf9439294/FLAG68c7408b2 [2020-11-30 01:15:38,612 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/data/3de37a496/fe013d0632e94672b1aaff2bf9439294 [2020-11-30 01:15:38,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:15:38,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:15:38,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:38,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:15:38,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:15:38,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:38,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b4390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38, skipping insertion in model container [2020-11-30 01:15:38,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:38,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:15:38,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:15:38,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:38,911 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:15:38,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:15:38,984 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:15:38,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38 WrapperNode [2020-11-30 01:15:38,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:15:38,990 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:38,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:15:38,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:15:39,001 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:15:39,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:15:39,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:15:39,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:15:39,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... [2020-11-30 01:15:39,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:15:39,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:15:39,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:15:39,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:15:39,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:15:39,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:15:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:15:39,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:15:39,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:15:50,580 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:15:50,581 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 01:15:50,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:50 BoogieIcfgContainer [2020-11-30 01:15:50,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:15:50,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:15:50,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:15:50,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:15:50,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:15:38" (1/3) ... [2020-11-30 01:15:50,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ae0250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:50, skipping insertion in model container [2020-11-30 01:15:50,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:15:38" (2/3) ... [2020-11-30 01:15:50,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ae0250 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:15:50, skipping insertion in model container [2020-11-30 01:15:50,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:50" (3/3) ... [2020-11-30 01:15:50,593 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound1.c [2020-11-30 01:15:50,606 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:15:50,614 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 01:15:50,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 01:15:50,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:15:50,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:15:50,659 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:15:50,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:15:50,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:15:50,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:15:50,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:15:50,660 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:15:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 01:15:50,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:15:50,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:50,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:50,684 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:50,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-11-30 01:15:50,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:50,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832011588] [2020-11-30 01:15:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:50,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:15:50,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:50,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:50,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:50,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832011588] [2020-11-30 01:15:50,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:50,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:15:50,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457379509] [2020-11-30 01:15:50,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:15:50,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:15:51,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:15:51,006 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 01:15:51,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:15:51,030 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-11-30 01:15:51,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:15:51,031 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 01:15:51,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:15:51,042 INFO L225 Difference]: With dead ends: 63 [2020-11-30 01:15:51,042 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:15:51,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:15:51,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:15:51,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 01:15:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:15:51,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-11-30 01:15:51,087 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2020-11-30 01:15:51,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:15:51,088 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-11-30 01:15:51,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:15:51,088 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-11-30 01:15:51,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:15:51,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:15:51,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:15:51,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:15:51,313 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:15:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:15:51,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-11-30 01:15:51,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:15:51,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245283306] [2020-11-30 01:15:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:15:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:15:51,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:15:51,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:15:51,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:51,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:15:55,711 WARN L193 SmtUtils]: Spent 859.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 01:15:55,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:15:55,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245283306] [2020-11-30 01:15:55,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:15:55,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-30 01:15:55,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248271891] [2020-11-30 01:15:55,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:15:55,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:15:55,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:15:55,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:15:55,749 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 7 states. [2020-11-30 01:16:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:16:22,167 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-11-30 01:16:22,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:16:22,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-30 01:16:22,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:16:22,169 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:16:22,169 INFO L226 Difference]: Without dead ends: 32 [2020-11-30 01:16:22,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:16:22,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-30 01:16:22,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-11-30 01:16:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 01:16:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-11-30 01:16:22,179 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2020-11-30 01:16:22,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:16:22,179 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-11-30 01:16:22,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:16:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-11-30 01:16:22,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:16:22,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:16:22,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:16:22,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:16:22,391 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:16:22,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:16:22,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1186818322, now seen corresponding path program 1 times [2020-11-30 01:16:22,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:16:22,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539669768] [2020-11-30 01:16:22,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:16:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:16:23,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:16:23,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:16:23,328 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-30 01:16:23,336 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:16:23,513 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:16:24,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:24,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:16:26,239 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2020-11-30 01:16:32,820 WARN L193 SmtUtils]: Spent 893.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-30 01:16:41,693 WARN L193 SmtUtils]: Spent 2.86 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 01:16:41,713 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 3, 2, 1] term [2020-11-30 01:16:41,713 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:16:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:16:42,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539669768] [2020-11-30 01:16:42,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:16:42,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2020-11-30 01:16:42,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828096088] [2020-11-30 01:16:42,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:16:42,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:16:42,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:16:42,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2020-11-30 01:16:42,293 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2020-11-30 01:17:05,438 WARN L193 SmtUtils]: Spent 17.10 s on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-11-30 01:17:10,265 WARN L860 $PredicateComparison]: unable to prove that (and (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv1 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-30 01:17:43,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:17:43,208 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-11-30 01:17:43,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 01:17:43,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 9 [2020-11-30 01:17:43,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:17:43,210 INFO L225 Difference]: With dead ends: 36 [2020-11-30 01:17:43,210 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 01:17:43,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 42.3s TimeCoverageRelationStatistics Valid=48, Invalid=90, Unknown=2, NotChecked=42, Total=182 [2020-11-30 01:17:43,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 01:17:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-11-30 01:17:43,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-30 01:17:43,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-11-30 01:17:43,221 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2020-11-30 01:17:43,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:17:43,221 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-11-30 01:17:43,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:17:43,222 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-11-30 01:17:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:17:43,223 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:17:43,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:17:43,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:17:43,424 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:17:43,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:17:43,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1928706379, now seen corresponding path program 1 times [2020-11-30 01:17:43,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:17:43,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94670563] [2020-11-30 01:17:43,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:17:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:17:46,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:17:59,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:17:59,039 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:17:59,228 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:17:59,229 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:17:59,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:17:59,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:17:59 BoogieIcfgContainer [2020-11-30 01:17:59,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:17:59,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:17:59,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:17:59,466 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:17:59,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:15:50" (3/4) ... [2020-11-30 01:17:59,469 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:17:59,530 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9eef1775-4831-4d9b-a555-1e1cbea5feda/bin/uautomizer/witness.graphml [2020-11-30 01:17:59,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:17:59,533 INFO L168 Benchmark]: Toolchain (without parser) took 140908.23 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 45.7 MB in the beginning and 43.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,533 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 47.1 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:17:59,534 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.43 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 34.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,535 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.69 ms. Allocated memory is still 65.0 MB. Free memory was 34.4 MB in the beginning and 32.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,536 INFO L168 Benchmark]: Boogie Preprocessor took 79.67 ms. Allocated memory is still 65.0 MB. Free memory was 32.7 MB in the beginning and 48.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,537 INFO L168 Benchmark]: RCFGBuilder took 11419.03 ms. Allocated memory is still 65.0 MB. Free memory was 48.3 MB in the beginning and 32.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,538 INFO L168 Benchmark]: TraceAbstraction took 128880.13 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 32.1 MB in the beginning and 45.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,539 INFO L168 Benchmark]: Witness Printer took 65.60 ms. Allocated memory is still 88.1 MB. Free memory was 45.8 MB in the beginning and 43.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:17:59,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 65.0 MB. Free memory was 47.2 MB in the beginning and 47.1 MB in the end (delta: 33.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 362.43 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 34.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.69 ms. Allocated memory is still 65.0 MB. Free memory was 34.4 MB in the beginning and 32.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 79.67 ms. Allocated memory is still 65.0 MB. Free memory was 32.7 MB in the beginning and 48.3 MB in the end (delta: -15.6 MB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11419.03 ms. Allocated memory is still 65.0 MB. Free memory was 48.3 MB in the beginning and 32.6 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 128880.13 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 32.1 MB in the beginning and 45.8 MB in the end (delta: -13.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.60 ms. Allocated memory is still 88.1 MB. Free memory was 45.8 MB in the beginning and 43.7 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, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L10] __assert_fail("0", "freire2.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 128.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 87.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 18 SDslu, 111 SDs, 0 SdLazy, 76 SolverSat, 10 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 61.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.3s SatisfiabilityAnalysisTime, 23.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 13 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...