./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.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_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 785f64f547c61374a0b1066dd48b421973c44157 ....................................................................................................................................................................................................................................................... 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_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 785f64f547c61374a0b1066dd48b421973c44157 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 01:40:20,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:40:20,305 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:40:20,350 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:40:20,351 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:40:20,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:40:20,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:40:20,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:40:20,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:40:20,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:40:20,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:40:20,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:40:20,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:40:20,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:40:20,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:40:20,370 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:40:20,371 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:40:20,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:40:20,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:40:20,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:40:20,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:40:20,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:40:20,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:40:20,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:40:20,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:40:20,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:40:20,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:40:20,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:40:20,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:40:20,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:40:20,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:40:20,394 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:40:20,395 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:40:20,396 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:40:20,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:40:20,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:40:20,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:40:20,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:40:20,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:40:20,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:40:20,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:40:20,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:40:20,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:40:20,443 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:40:20,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:40:20,444 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:40:20,444 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:40:20,444 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:40:20,444 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:40:20,444 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:40:20,445 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:40:20,445 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:40:20,445 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:40:20,445 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:40:20,445 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:40:20,446 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:40:20,446 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:40:20,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:40:20,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:40:20,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:40:20,447 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:40:20,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:40:20,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:40:20,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:40:20,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:40:20,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:40:20,464 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:40:20,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:40:20,464 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:40:20,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:40:20,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:40:20,465 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:40:20,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:40:20,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:40:20,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:40:20,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:40:20,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:40:20,466 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:40:20,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:40:20,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:40:20,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:40:20,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:40:20,468 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 785f64f547c61374a0b1066dd48b421973c44157 [2020-11-30 01:40:20,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:40:20,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:40:20,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:40:20,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:40:20,874 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:40:20,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-30 01:40:20,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/74baabf3e/1446803b66884dfebcb82dc0ce6a86da/FLAG6732d6d63 [2020-11-30 01:40:21,528 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:40:21,529 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-30 01:40:21,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/74baabf3e/1446803b66884dfebcb82dc0ce6a86da/FLAG6732d6d63 [2020-11-30 01:40:21,889 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/74baabf3e/1446803b66884dfebcb82dc0ce6a86da [2020-11-30 01:40:21,891 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:40:21,893 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:40:21,909 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:40:21,909 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:40:21,913 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:40:21,913 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:40:21" (1/1) ... [2020-11-30 01:40:21,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f636e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:21, skipping insertion in model container [2020-11-30 01:40:21,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:40:21" (1/1) ... [2020-11-30 01:40:21,933 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:40:21,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:40:22,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:40:22,144 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:40:22,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:40:22,183 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:40:22,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22 WrapperNode [2020-11-30 01:40:22,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:40:22,185 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:40:22,185 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:40:22,185 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:40:22,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,201 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:40:22,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:40:22,223 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:40:22,223 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:40:22,229 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,236 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,240 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... [2020-11-30 01:40:22,244 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:40:22,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:40:22,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:40:22,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:40:22,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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 01:40:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:40:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:40:22,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:40:22,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:40:22,767 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:40:22,767 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 01:40:22,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:40:22 BoogieIcfgContainer [2020-11-30 01:40:22,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:40:22,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:40:22,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:40:22,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:40:22,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:40:21" (1/3) ... [2020-11-30 01:40:22,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4b910f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:40:22, skipping insertion in model container [2020-11-30 01:40:22,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:22" (2/3) ... [2020-11-30 01:40:22,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4b910f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:40:22, skipping insertion in model container [2020-11-30 01:40:22,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:40:22" (3/3) ... [2020-11-30 01:40:22,784 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound5.c [2020-11-30 01:40:22,798 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:40:22,804 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:40:22,819 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:40:22,865 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:40:22,866 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:40:22,866 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:40:22,866 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:40:22,867 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:40:22,867 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:40:22,867 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:40:22,867 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:40:22,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-30 01:40:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-30 01:40:22,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:40:22,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-30 01:40:22,895 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:40:22,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:40:22,903 INFO L82 PathProgramCache]: Analyzing trace with hash 73178710, now seen corresponding path program 1 times [2020-11-30 01:40:22,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:40:22,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037203076] [2020-11-30 01:40:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:40:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:40:23,077 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:40:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:40:23,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:40:23,155 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:40:23,155 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:40:23,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:40:23,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:40:23 BoogieIcfgContainer [2020-11-30 01:40:23,189 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:40:23,192 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:40:23,192 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:40:23,192 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:40:23,193 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:40:22" (3/4) ... [2020-11-30 01:40:23,196 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:40:23,197 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:40:23,202 INFO L168 Benchmark]: Toolchain (without parser) took 1305.04 ms. Allocated memory was 81.8 MB in the beginning and 123.7 MB in the end (delta: 41.9 MB). Free memory was 41.5 MB in the beginning and 67.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:40:23,204 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:40:23,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.05 ms. Allocated memory was 81.8 MB in the beginning and 123.7 MB in the end (delta: 41.9 MB). Free memory was 41.3 MB in the beginning and 95.7 MB in the end (delta: -54.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:40:23,208 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:40:23,209 INFO L168 Benchmark]: Boogie Preprocessor took 21.66 ms. Allocated memory is still 123.7 MB. Free memory was 94.3 MB in the beginning and 93.3 MB in the end (delta: 999.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:40:23,210 INFO L168 Benchmark]: RCFGBuilder took 524.55 ms. Allocated memory is still 123.7 MB. Free memory was 93.3 MB in the beginning and 79.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:40:23,211 INFO L168 Benchmark]: TraceAbstraction took 418.49 ms. Allocated memory is still 123.7 MB. Free memory was 79.3 MB in the beginning and 67.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:40:23,212 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 123.7 MB. Free memory was 67.4 MB in the beginning and 67.0 MB in the end (delta: 387.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:40:23,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 57.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.05 ms. Allocated memory was 81.8 MB in the beginning and 123.7 MB in the end (delta: 41.9 MB). Free memory was 41.3 MB in the beginning and 95.7 MB in the end (delta: -54.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.08 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.66 ms. Allocated memory is still 123.7 MB. Free memory was 94.3 MB in the beginning and 93.3 MB in the end (delta: 999.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 524.55 ms. Allocated memory is still 123.7 MB. Free memory was 93.3 MB in the beginning and 79.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 418.49 ms. Allocated memory is still 123.7 MB. Free memory was 79.3 MB in the beginning and 67.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 5.31 ms. Allocated memory is still 123.7 MB. Free memory was 67.4 MB in the beginning and 67.0 MB in the end (delta: 387.1 kB). Peak memory consumption was 2.1 MB. 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 33, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L24] int counter = 0; [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<5 [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire1.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:40:25,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:40:25,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:40:25,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:40:25,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:40:25,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:40:25,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:40:25,954 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:40:25,958 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:40:25,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:40:25,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:40:25,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:40:25,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:40:25,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:40:25,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:40:25,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:40:25,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:40:25,988 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:40:25,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:40:26,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:40:26,002 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:40:26,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:40:26,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:40:26,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:40:26,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:40:26,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:40:26,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:40:26,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:40:26,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:40:26,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:40:26,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:40:26,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:40:26,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:40:26,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:40:26,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:40:26,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:40:26,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:40:26,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:40:26,039 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:40:26,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:40:26,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:40:26,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:40:26,066 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:40:26,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:40:26,067 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:40:26,067 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:40:26,068 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:40:26,068 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:40:26,068 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:40:26,068 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:40:26,069 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:40:26,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:40:26,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:40:26,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:40:26,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:40:26,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:40:26,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:40:26,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:40:26,071 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:40:26,072 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:40:26,072 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:40:26,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:40:26,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:40:26,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:40:26,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:40:26,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:40:26,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:40:26,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:40:26,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:40:26,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:40:26,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:40:26,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:40:26,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:40:26,075 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:40:26,075 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:40:26,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:40:26,076 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:40:26,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:40:26,076 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_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 785f64f547c61374a0b1066dd48b421973c44157 [2020-11-30 01:40:26,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:40:26,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:40:26,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:40:26,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:40:26,505 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:40:26,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-30 01:40:26,574 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/622399595/f4b140e0c5374839accdb41da214e53c/FLAG29590749e [2020-11-30 01:40:27,094 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:40:27,095 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/sv-benchmarks/c/nla-digbench-scaling/freire1_unwindbound5.c [2020-11-30 01:40:27,101 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/622399595/f4b140e0c5374839accdb41da214e53c/FLAG29590749e [2020-11-30 01:40:27,466 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/data/622399595/f4b140e0c5374839accdb41da214e53c [2020-11-30 01:40:27,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:40:27,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:40:27,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:40:27,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:40:27,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:40:27,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,488 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20290bdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27, skipping insertion in model container [2020-11-30 01:40:27,489 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:40:27,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:40:27,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:40:27,679 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:40:27,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:40:27,719 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:40:27,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27 WrapperNode [2020-11-30 01:40:27,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:40:27,722 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:40:27,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:40:27,723 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:40:27,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:40:27,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:40:27,799 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:40:27,799 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:40:27,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... [2020-11-30 01:40:27,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:40:27,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:40:27,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:40:27,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:40:27,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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 01:40:27,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:40:27,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:40:27,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:40:27,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:40:33,092 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:40:33,093 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 01:40:33,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:40:33 BoogieIcfgContainer [2020-11-30 01:40:33,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:40:33,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:40:33,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:40:33,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:40:33,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:40:27" (1/3) ... [2020-11-30 01:40:33,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7c1f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:40:33, skipping insertion in model container [2020-11-30 01:40:33,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:40:27" (2/3) ... [2020-11-30 01:40:33,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7c1f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:40:33, skipping insertion in model container [2020-11-30 01:40:33,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:40:33" (3/3) ... [2020-11-30 01:40:33,104 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_unwindbound5.c [2020-11-30 01:40:33,116 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:40:33,121 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 01:40:33,135 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 01:40:33,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:40:33,160 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:40:33,160 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:40:33,160 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:40:33,160 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:40:33,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:40:33,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:40:33,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:40:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 01:40:33,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:40:33,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:40:33,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:40:33,180 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:40:33,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:40:33,186 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 01:40:33,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:40:33,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [614264711] [2020-11-30 01:40:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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 01:40:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:40:36,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:40:36,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:40:38,558 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-30 01:40:41,780 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 01:40:41,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:40:44,362 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-11-30 01:40:46,421 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-11-30 01:40:48,478 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from false [2020-11-30 01:40:50,526 WARN L860 $PredicateComparison]: unable to prove that (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32))) is different from true [2020-11-30 01:40:50,528 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 01:40:50,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [614264711] [2020-11-30 01:40:50,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:40:50,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-30 01:40:50,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771074388] [2020-11-30 01:40:50,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:40:50,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:40:50,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:40:50,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=20, Unknown=4, NotChecked=18, Total=56 [2020-11-30 01:40:50,556 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 8 states. [2020-11-30 01:40:52,685 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from false [2020-11-30 01:40:54,750 WARN L860 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (forall ((v_ULTIMATE.start_main_~a~0_8 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode .cse0 v_ULTIMATE.start_main_~a~0_8) .cse0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) (fp.div c_currentRoundingMode v_ULTIMATE.start_main_~a~0_8 ((_ to_fp 11 53) c_currentRoundingMode 2.0))))) (_ bv0 32)))) is different from true [2020-11-30 01:40:57,260 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (fp.div c_currentRoundingMode c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode 2.0))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_currentRoundingMode roundNearestTiesToEven) (= (_ bv0 32) c_ULTIMATE.start_main_~r~0)) is different from true [2020-11-30 01:41:10,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:41:10,333 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-11-30 01:41:10,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:41:10,335 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 6 [2020-11-30 01:41:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:41:10,344 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:41:10,344 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 01:41:10,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=22, Invalid=29, Unknown=7, NotChecked=52, Total=110 [2020-11-30 01:41:10,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 01:41:10,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10. [2020-11-30 01:41:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-30 01:41:10,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2020-11-30 01:41:10,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2020-11-30 01:41:10,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:41:10,383 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2020-11-30 01:41:10,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:41:10,384 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2020-11-30 01:41:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 01:41:10,385 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:41:10,385 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:41:10,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:41:10,605 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:41:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:41:10,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1806863068, now seen corresponding path program 1 times [2020-11-30 01:41:10,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:41:10,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502929819] [2020-11-30 01:41:10,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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 01:41:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:41:11,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:41:11,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:11,069 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 01:41:11,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:11,132 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 01:41:11,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502929819] [2020-11-30 01:41:11,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:41:11,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-30 01:41:11,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649273565] [2020-11-30 01:41:11,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:41:11,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:41:11,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:41:11,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:41:11,136 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand 6 states. [2020-11-30 01:41:14,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:41:14,004 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2020-11-30 01:41:14,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:41:14,005 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-30 01:41:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:41:14,005 INFO L225 Difference]: With dead ends: 16 [2020-11-30 01:41:14,006 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 01:41:14,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:41:14,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 01:41:14,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:41:14,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:41:14,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2020-11-30 01:41:14,012 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 7 [2020-11-30 01:41:14,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:41:14,012 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2020-11-30 01:41:14,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:41:14,012 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2020-11-30 01:41:14,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:41:14,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:41:14,013 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:41:14,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:41:14,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:41:14,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:41:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1275448533, now seen corresponding path program 1 times [2020-11-30 01:41:14,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:41:14,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486254639] [2020-11-30 01:41:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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 01:41:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:41:14,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-30 01:41:14,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:16,706 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from false [2020-11-30 01:41:18,762 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))))) (or (and (not .cse0) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))))) is different from true [2020-11-30 01:41:18,774 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 01:41:18,774 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:41:20,842 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from false [2020-11-30 01:41:22,898 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) is different from true [2020-11-30 01:41:22,910 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:41:29,131 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-11-30 01:41:29,138 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 01:41:29,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:33,311 WARN L860 $PredicateComparison]: unable to prove that (or (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0)))) (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) is different from true [2020-11-30 01:41:33,336 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 01:41:33,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486254639] [2020-11-30 01:41:33,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:41:33,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2020-11-30 01:41:33,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167394312] [2020-11-30 01:41:33,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:41:33,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:41:33,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:41:33,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=5, Unknown=6, NotChecked=20, Total=42 [2020-11-30 01:41:33,339 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 7 states. [2020-11-30 01:41:37,485 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from false [2020-11-30 01:41:39,569 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) c_ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_main_~x~0))))) (.cse1 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (and (or (and (not .cse0) .cse1) (and .cse0 (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) (or .cse0 .cse1))) is different from true [2020-11-30 01:41:41,646 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_main_~a~0 (_ FloatingPoint 11 53)) (ULTIMATE.start_main_~x~0 (_ FloatingPoint 11 53)) (currentRoundingMode RoundingMode) (ULTIMATE.start_main_~r~0 (_ BitVec 32))) (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add currentRoundingMode (fp.sub currentRoundingMode (fp.sub currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (bvmul ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~r~0)) ULTIMATE.start_main_~a~0) ((_ to_fp 11 53) currentRoundingMode ULTIMATE.start_main_~r~0)) (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (_ bv2 32)) ULTIMATE.start_main_~x~0))))) (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) is different from false [2020-11-30 01:41:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:41:43,835 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-30 01:41:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:41:43,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2020-11-30 01:41:43,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:41:43,836 INFO L225 Difference]: With dead ends: 16 [2020-11-30 01:41:43,836 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 01:41:43,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=15, Invalid=6, Unknown=9, NotChecked=42, Total=72 [2020-11-30 01:41:43,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 01:41:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 01:41:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:41:43,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-30 01:41:43,841 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2020-11-30 01:41:43,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:41:43,842 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-30 01:41:43,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:41:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-30 01:41:43,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:41:43,842 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:41:43,842 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:41:44,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:41:44,043 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:41:44,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:41:44,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1673782672, now seen corresponding path program 1 times [2020-11-30 01:41:44,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:41:44,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553280020] [2020-11-30 01:41:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/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 01:41:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:41:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:41:44,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:44,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:44,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:45,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553280020] [2020-11-30 01:41:45,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1776523363] [2020-11-30 01:41:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:41:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:41:46,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:41:46,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:46,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:46,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:46,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435330082] [2020-11-30 01:41:46,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:41:46,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:41:46,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:41:46,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:46,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:46,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:46,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:41:46,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 7 [2020-11-30 01:41:46,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776610410] [2020-11-30 01:41:46,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:41:46,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:41:46,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:41:46,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:41:46,696 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 8 states. [2020-11-30 01:41:51,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:41:51,482 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2020-11-30 01:41:51,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:41:51,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-30 01:41:51,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:41:51,484 INFO L225 Difference]: With dead ends: 24 [2020-11-30 01:41:51,484 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 01:41:51,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:41:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 01:41:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 01:41:51,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 01:41:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-30 01:41:51,491 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 11 [2020-11-30 01:41:51,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:41:51,492 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-30 01:41:51,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:41:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-30 01:41:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:41:51,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:41:51,493 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-30 01:41:52,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:41:52,105 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:41:52,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:41:52,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1883886344, now seen corresponding path program 2 times [2020-11-30 01:41:52,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:41:52,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175848443] [2020-11-30 01:41:52,106 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 01:41:53,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:41:53,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:41:54,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:41:54,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:54,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:54,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:54,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175848443] [2020-11-30 01:41:54,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [510806339] [2020-11-30 01:41:54,256 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 01:41:56,490 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:41:56,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:41:56,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:41:56,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:41:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:56,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:41:56,520 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:41:56,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382421677] [2020-11-30 01:41:56,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:03,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:42:03,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:42:03,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 01:42:03,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:42:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:03,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:42:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:42:03,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 01:42:03,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 7, 7] total 16 [2020-11-30 01:42:03,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284310517] [2020-11-30 01:42:03,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 01:42:03,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:42:03,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 01:42:03,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:42:03,669 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 17 states. [2020-11-30 01:42:14,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:42:14,118 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-11-30 01:42:14,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-30 01:42:14,121 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 19 [2020-11-30 01:42:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:42:14,122 INFO L225 Difference]: With dead ends: 40 [2020-11-30 01:42:14,122 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 01:42:14,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-11-30 01:42:14,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 01:42:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 01:42:14,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:42:14,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-11-30 01:42:14,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 19 [2020-11-30 01:42:14,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:42:14,132 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-11-30 01:42:14,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 01:42:14,132 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-11-30 01:42:14,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:42:14,133 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:42:14,134 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-11-30 01:42:14,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:42:14,748 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:42:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:42:14,749 INFO L82 PathProgramCache]: Analyzing trace with hash -532771744, now seen corresponding path program 3 times [2020-11-30 01:42:14,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:42:14,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [682418968] [2020-11-30 01:42:14,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 01:42:52,057 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-30 01:42:52,057 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-30 01:42:52,057 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:44:10,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:44:10,470 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:44:10,757 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 01:44:10,758 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:44:10,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 01:44:11,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:44:11 BoogieIcfgContainer [2020-11-30 01:44:11,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:44:11,010 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:44:11,010 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:44:11,011 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:44:11,011 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:40:33" (3/4) ... [2020-11-30 01:44:11,014 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:44:11,085 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_80486946-3a5c-4617-964e-b22acf807807/bin/utaipan/witness.graphml [2020-11-30 01:44:11,086 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:44:11,087 INFO L168 Benchmark]: Toolchain (without parser) took 223615.25 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 49.9 MB in the beginning and 45.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:44:11,088 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:44:11,088 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.33 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 39.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:44:11,089 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.06 ms. Allocated memory is still 69.2 MB. Free memory was 39.3 MB in the beginning and 52.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:44:11,090 INFO L168 Benchmark]: Boogie Preprocessor took 47.75 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:44:11,090 INFO L168 Benchmark]: RCFGBuilder took 5247.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 38.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:44:11,091 INFO L168 Benchmark]: TraceAbstraction took 217913.74 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 38.2 MB in the beginning and 49.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:44:11,092 INFO L168 Benchmark]: Witness Printer took 75.35 ms. Allocated memory is still 90.2 MB. Free memory was 49.2 MB in the beginning and 45.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:44:11,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 69.2 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 245.33 ms. Allocated memory is still 69.2 MB. Free memory was 49.6 MB in the beginning and 39.3 MB in the end (delta: 10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.06 ms. Allocated memory is still 69.2 MB. Free memory was 39.3 MB in the beginning and 52.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.75 ms. Allocated memory is still 69.2 MB. Free memory was 52.2 MB in the beginning and 50.8 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 5247.30 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 38.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 217913.74 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 38.2 MB in the beginning and 49.2 MB in the end (delta: -10.9 MB). Peak memory consumption was 11.2 MB. Max. memory is 16.1 GB. * Witness Printer took 75.35 ms. Allocated memory is still 90.2 MB. Free memory was 49.2 MB in the beginning and 45.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 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: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x; [L28] a = __VERIFIER_nondet_double() [L29] x = a / 2.0 [L30] r = 0 VAL [counter=0] [L32] EXPR counter++ VAL [counter=1] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=1] [L32] EXPR counter++ VAL [counter=2] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=2] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=2] [L32] EXPR counter++ VAL [counter=3] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=3] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=3] [L32] EXPR counter++ VAL [counter=4] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=4] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=4] [L32] EXPR counter++ VAL [counter=5] [L32] COND TRUE counter++<5 [L17] COND FALSE !(!(cond)) VAL [counter=5] [L35] COND FALSE !(!(x > r)) [L37] x = x - r [L38] r = r + 1 VAL [counter=5] [L32] EXPR counter++ VAL [counter=6] [L32] COND FALSE !(counter++<5) [L17] COND TRUE !(cond) VAL [counter=6] [L10] __assert_fail("0", "freire1.c", 10, "reach_error") VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 217.8s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 48.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 50 SDtfs, 43 SDslu, 136 SDs, 0 SdLazy, 76 SolverSat, 15 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 34.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 220 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 39.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=5, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 53.8s SatisfiabilityAnalysisTime, 34.2s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 206 ConstructedInterpolants, 2 QuantifiedInterpolants, 11797 SizeOfPredicates, 29 NumberOfNonLiveVariables, 409 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 18 InterpolantComputations, 6 PerfectInterpolantSequences, 0/120 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...