./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.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_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dab4c89b7bfa0a9578f6aa14537851d09f72688 .......................................................................................................................................................................................................................................................................................... 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_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dab4c89b7bfa0a9578f6aa14537851d09f72688 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 20:20:55,267 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:20:55,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:20:55,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:20:55,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:20:55,365 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:20:55,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:20:55,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:20:55,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:20:55,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:20:55,389 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:20:55,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:20:55,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:20:55,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:20:55,400 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:20:55,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:20:55,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:20:55,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:20:55,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:20:55,423 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:20:55,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:20:55,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:20:55,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:20:55,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:20:55,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:20:55,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:20:55,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:20:55,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:20:55,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:20:55,450 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:20:55,450 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:20:55,452 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:20:55,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:20:55,456 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:20:55,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:20:55,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:20:55,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:20:55,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:20:55,460 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:20:55,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:20:55,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:20:55,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:20:55,510 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:20:55,510 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:20:55,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:20:55,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:20:55,513 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:20:55,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:20:55,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:20:55,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:20:55,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:20:55,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:20:55,516 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:20:55,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:20:55,517 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:20:55,517 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:20:55,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:20:55,518 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:20:55,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:20:55,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:20:55,519 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:20:55,519 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:20:55,519 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:20:55,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:20:55,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:20:55,520 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:20:55,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:20:55,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:20:55,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:20:55,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:20:55,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:20:55,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dab4c89b7bfa0a9578f6aa14537851d09f72688 [2020-11-29 20:20:55,833 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:20:55,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:20:55,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:20:55,870 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:20:55,871 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:20:55,873 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-11-29 20:20:55,963 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/18b030c01/6bb41bf2bb704384b7021b0f64842279/FLAG5546613cc [2020-11-29 20:20:56,518 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:20:56,519 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-11-29 20:20:56,529 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/18b030c01/6bb41bf2bb704384b7021b0f64842279/FLAG5546613cc [2020-11-29 20:20:56,873 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/18b030c01/6bb41bf2bb704384b7021b0f64842279 [2020-11-29 20:20:56,876 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:20:56,878 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:20:56,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:20:56,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:20:56,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:20:56,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:20:56" (1/1) ... [2020-11-29 20:20:56,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d8d8f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:56, skipping insertion in model container [2020-11-29 20:20:56,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:20:56" (1/1) ... [2020-11-29 20:20:56,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:20:56,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:20:57,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:20:57,217 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:20:57,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:20:57,266 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:20:57,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57 WrapperNode [2020-11-29 20:20:57,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:20:57,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:20:57,271 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:20:57,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:20:57,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:20:57,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:20:57,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:20:57,352 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:20:57,362 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... [2020-11-29 20:20:57,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:20:57,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:20:57,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:20:57,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:20:57,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:20:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:20:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:20:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:20:57,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:20:57,880 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:20:57,880 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 20:20:57,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:20:57 BoogieIcfgContainer [2020-11-29 20:20:57,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:20:57,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:20:57,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:20:57,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:20:57,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:20:56" (1/3) ... [2020-11-29 20:20:57,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f99fe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:20:57, skipping insertion in model container [2020-11-29 20:20:57,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:20:57" (2/3) ... [2020-11-29 20:20:57,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f99fe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:20:57, skipping insertion in model container [2020-11-29 20:20:57,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:20:57" (3/3) ... [2020-11-29 20:20:57,893 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.c [2020-11-29 20:20:57,907 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:20:57,912 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:20:57,926 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:20:57,991 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:20:57,991 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:20:57,992 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:20:57,992 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:20:57,992 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:20:57,992 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:20:57,992 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:20:57,992 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:20:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 20:20:58,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:20:58,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:58,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:20:58,033 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:58,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:58,053 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 20:20:58,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:20:58,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656974313] [2020-11-29 20:20:58,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:20:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:20:58,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:20:58,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656974313] [2020-11-29 20:20:58,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:20:58,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:20:58,317 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015536106] [2020-11-29 20:20:58,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:20:58,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:20:58,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:20:58,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:20:58,352 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 20:20:58,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:20:58,383 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 20:20:58,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:20:58,385 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 20:20:58,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:20:58,414 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:20:58,414 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 20:20:58,418 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:20:58,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 20:20:58,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 20:20:58,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:20:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 20:20:58,480 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 20:20:58,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:20:58,481 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 20:20:58,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:20:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 20:20:58,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:20:58,483 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:20:58,483 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:20:58,483 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:20:58,484 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:20:58,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:20:58,490 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 20:20:58,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:20:58,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67324987] [2020-11-29 20:20:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:20:58,523 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 20:20:58,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212939416] [2020-11-29 20:20:58,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:20:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:20:58,645 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:20:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:20:58,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:20:58,710 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:20:58,710 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:20:58,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 20:20:59,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:20:59 BoogieIcfgContainer [2020-11-29 20:20:59,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:20:59,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:20:59,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:20:59,019 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:20:59,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:20:57" (3/4) ... [2020-11-29 20:20:59,024 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:20:59,024 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:20:59,029 INFO L168 Benchmark]: Toolchain (without parser) took 2147.74 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 53.0 MB in the beginning and 76.6 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:59,031 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 43.8 MB in the beginning and 43.8 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:59,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.53 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.8 MB in the beginning and 76.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:59,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.64 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:59,036 INFO L168 Benchmark]: Boogie Preprocessor took 44.97 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:59,037 INFO L168 Benchmark]: RCFGBuilder took 485.37 ms. Allocated memory is still 100.7 MB. Free memory was 74.1 MB in the beginning and 59.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:59,038 INFO L168 Benchmark]: TraceAbstraction took 1134.35 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 77.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:20:59,042 INFO L168 Benchmark]: Witness Printer took 4.99 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 76.6 MB in the end (delta: 514.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:20:59,056 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 83.9 MB. Free memory was 43.8 MB in the beginning and 43.8 MB in the end (delta: 38.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.53 ms. Allocated memory was 83.9 MB in the beginning and 100.7 MB in the end (delta: 16.8 MB). Free memory was 52.8 MB in the beginning and 76.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.64 ms. Allocated memory is still 100.7 MB. Free memory was 76.8 MB in the beginning and 75.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 44.97 ms. Allocated memory is still 100.7 MB. Free memory was 75.2 MB in the beginning and 74.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 485.37 ms. Allocated memory is still 100.7 MB. Free memory was 74.1 MB in the beginning and 59.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1134.35 ms. Allocated memory is still 100.7 MB. Free memory was 59.4 MB in the beginning and 77.1 MB in the end (delta: -17.6 MB). Peak memory consumption was 27.4 MB. Max. memory is 16.1 GB. * Witness Printer took 4.99 ms. Allocated memory is still 100.7 MB. Free memory was 77.1 MB in the beginning and 76.6 MB in the end (delta: 514.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 34. Possible FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<100 [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire2.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:21:01,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:21:01,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:21:01,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:21:01,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:21:01,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:21:01,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:21:01,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:21:01,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:21:02,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:21:02,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:21:02,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:21:02,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:21:02,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:21:02,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:21:02,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:21:02,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:21:02,027 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:21:02,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:21:02,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:21:02,037 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:21:02,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:21:02,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:21:02,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:21:02,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:21:02,064 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:21:02,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:21:02,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:21:02,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:21:02,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:21:02,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:21:02,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:21:02,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:21:02,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:21:02,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:21:02,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:21:02,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:21:02,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:21:02,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:21:02,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:21:02,082 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:21:02,083 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 20:21:02,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:21:02,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:21:02,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:21:02,148 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:21:02,148 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:21:02,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:21:02,149 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:21:02,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:21:02,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:21:02,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:21:02,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:21:02,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:21:02,151 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 20:21:02,152 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 20:21:02,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:21:02,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:21:02,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:21:02,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:21:02,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:21:02,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:21:02,153 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:21:02,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:21:02,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:21:02,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:21:02,154 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:21:02,155 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:21:02,155 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 20:21:02,155 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 20:21:02,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:21:02,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:21:02,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 20:21:02,167 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_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dab4c89b7bfa0a9578f6aa14537851d09f72688 [2020-11-29 20:21:02,622 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:21:02,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:21:02,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:21:02,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:21:02,677 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:21:02,678 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-11-29 20:21:02,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/5757cfed0/052814b80a594bde882ac9408507b75c/FLAG928d6dfa0 [2020-11-29 20:21:03,469 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:21:03,470 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/sv-benchmarks/c/nla-digbench-scaling/freire2_unwindbound100.c [2020-11-29 20:21:03,478 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/5757cfed0/052814b80a594bde882ac9408507b75c/FLAG928d6dfa0 [2020-11-29 20:21:03,812 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/data/5757cfed0/052814b80a594bde882ac9408507b75c [2020-11-29 20:21:03,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:21:03,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:21:03,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:21:03,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:21:03,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:21:03,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:21:03" (1/1) ... [2020-11-29 20:21:03,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb60c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:03, skipping insertion in model container [2020-11-29 20:21:03,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:21:03" (1/1) ... [2020-11-29 20:21:03,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:21:03,868 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:21:04,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:21:04,071 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:21:04,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:21:04,178 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:21:04,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04 WrapperNode [2020-11-29 20:21:04,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:21:04,212 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:21:04,212 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:21:04,213 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:21:04,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:21:04,263 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:21:04,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:21:04,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:21:04,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,279 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... [2020-11-29 20:21:04,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:21:04,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:21:04,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:21:04,304 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:21:04,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:21:04,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 20:21:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:21:04,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:21:04,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:21:16,201 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:21:16,201 INFO L298 CfgBuilder]: Removed 29 assume(true) statements. [2020-11-29 20:21:16,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:21:16 BoogieIcfgContainer [2020-11-29 20:21:16,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:21:16,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:21:16,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:21:16,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:21:16,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:21:03" (1/3) ... [2020-11-29 20:21:16,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a24fb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:21:16, skipping insertion in model container [2020-11-29 20:21:16,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:21:04" (2/3) ... [2020-11-29 20:21:16,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a24fb2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:21:16, skipping insertion in model container [2020-11-29 20:21:16,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:21:16" (3/3) ... [2020-11-29 20:21:16,215 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_unwindbound100.c [2020-11-29 20:21:16,230 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:21:16,236 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-29 20:21:16,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-29 20:21:16,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:21:16,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:21:16,282 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:21:16,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:21:16,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:21:16,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:21:16,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:21:16,284 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:21:16,304 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-11-29 20:21:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:21:16,311 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:21:16,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:21:16,313 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:21:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:21:16,321 INFO L82 PathProgramCache]: Analyzing trace with hash 891015143, now seen corresponding path program 1 times [2020-11-29 20:21:16,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:21:16,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659541441] [2020-11-29 20:21:16,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-29 20:21:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:21:16,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 20:21:16,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:21:16,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:21:16,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:21:16,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:21:16,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659541441] [2020-11-29 20:21:16,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:21:16,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 20:21:16,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910904401] [2020-11-29 20:21:16,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:21:16,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:21:16,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:21:16,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:21:16,615 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-11-29 20:21:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:21:16,634 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-11-29 20:21:16,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:21:16,636 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-29 20:21:16,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:21:16,647 INFO L225 Difference]: With dead ends: 62 [2020-11-29 20:21:16,648 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 20:21:16,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:21:16,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 20:21:16,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-29 20:21:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-29 20:21:16,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-29 20:21:16,710 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-11-29 20:21:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:21:16,711 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-29 20:21:16,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:21:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-29 20:21:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 20:21:16,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:21:16,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 20:21:16,926 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 20:21:16,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:21:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:21:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-29 20:21:16,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:21:16,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1310970781] [2020-11-29 20:21:16,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-29 20:21:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:21:17,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:21:17,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:21:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:21:17,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:21:20,752 WARN L193 SmtUtils]: Spent 805.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-29 20:21:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:21:20,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1310970781] [2020-11-29 20:21:20,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:21:20,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-11-29 20:21:20,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709700888] [2020-11-29 20:21:20,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 20:21:20,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:21:20,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 20:21:20,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:21:20,784 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-11-29 20:21:42,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:21:42,814 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-11-29 20:21:42,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 20:21:42,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 6 [2020-11-29 20:21:42,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:21:42,817 INFO L225 Difference]: With dead ends: 47 [2020-11-29 20:21:42,817 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 20:21:42,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 20:21:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 20:21:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-11-29 20:21:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:21:42,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-11-29 20:21:42,829 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2020-11-29 20:21:42,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:21:42,830 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-11-29 20:21:42,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 20:21:42,830 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-11-29 20:21:42,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:21:42,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:21:42,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:21:43,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 20:21:43,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:21:43,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:21:43,048 INFO L82 PathProgramCache]: Analyzing trace with hash 179688749, now seen corresponding path program 1 times [2020-11-29 20:21:43,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:21:43,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366427711] [2020-11-29 20:21:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-29 20:21:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:21:44,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 20:21:44,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:21:44,713 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2020-11-29 20:21:46,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:21:46,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:21:48,465 WARN L838 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from false [2020-11-29 20:21:50,516 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) is different from true [2020-11-29 20:21:59,883 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification that was a NOOP. DAG size: 11 [2020-11-29 20:21:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:21:59,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366427711] [2020-11-29 20:21:59,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:21:59,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2020-11-29 20:21:59,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601227488] [2020-11-29 20:21:59,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 20:21:59,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:21:59,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 20:21:59,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=30, Unknown=2, NotChecked=10, Total=56 [2020-11-29 20:21:59,887 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 8 states. [2020-11-29 20:22:09,720 WARN L193 SmtUtils]: Spent 6.25 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-29 20:22:14,266 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((v_ULTIMATE.start_main_~a~0_11 (_ FloatingPoint 11 53))) (= ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)) v_ULTIMATE.start_main_~a~0_11))) (fp.sub c_currentRoundingMode .cse0 .cse0))) (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse1 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 20:22:35,137 WARN L193 SmtUtils]: Spent 9.51 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 20:22:47,534 WARN L860 $PredicateComparison]: unable to prove that (and (not (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (_ bv1 32) c_ULTIMATE.start_main_~r~0) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2020-11-29 20:22:50,663 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-11-29 20:23:20,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:20,942 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2020-11-29 20:23:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 20:23:20,971 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2020-11-29 20:23:20,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:20,973 INFO L225 Difference]: With dead ends: 41 [2020-11-29 20:23:20,973 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 20:23:20,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 54.1s TimeCoverageRelationStatistics Valid=43, Invalid=95, Unknown=6, NotChecked=66, Total=210 [2020-11-29 20:23:20,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 20:23:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-11-29 20:23:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:23:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-29 20:23:21,006 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 8 [2020-11-29 20:23:21,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:21,006 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-29 20:23:21,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 20:23:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-29 20:23:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:23:21,007 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:21,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:21,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-29 20:23:21,234 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:21,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:21,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1251711063, now seen corresponding path program 1 times [2020-11-29 20:23:21,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:23:21,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126376824] [2020-11-29 20:23:21,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-29 20:23:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:23:21,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:23:21,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:23:21,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:21,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 20:23:21,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:23:21,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126376824] [2020-11-29 20:23:21,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:23:21,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-29 20:23:21,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261027108] [2020-11-29 20:23:21,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 20:23:21,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 20:23:21,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:23:21,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:23:21,816 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2020-11-29 20:23:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:23:23,278 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-11-29 20:23:23,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:23:23,281 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-29 20:23:23,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:23:23,282 INFO L225 Difference]: With dead ends: 64 [2020-11-29 20:23:23,282 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 20:23:23,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-29 20:23:23,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 20:23:23,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2020-11-29 20:23:23,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 20:23:23,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-11-29 20:23:23,297 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 9 [2020-11-29 20:23:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:23:23,297 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-11-29 20:23:23,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 20:23:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-11-29 20:23:23,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:23:23,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:23:23,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:23:23,506 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-29 20:23:23,507 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:23:23,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:23:23,507 INFO L82 PathProgramCache]: Analyzing trace with hash 882382672, now seen corresponding path program 1 times [2020-11-29 20:23:23,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 20:23:23,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605964584] [2020-11-29 20:23:23,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-29 20:23:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:23:25,659 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:25:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:25:02,648 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:25:03,247 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 20:25:03,248 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 20:25:03,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-29 20:25:03,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:25:03 BoogieIcfgContainer [2020-11-29 20:25:03,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:25:03,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:25:03,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:25:03,483 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:25:03,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:21:16" (3/4) ... [2020-11-29 20:25:03,500 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 20:25:03,551 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bb2f2491-d7bf-4cab-ac6a-e26681f3e31e/bin/uautomizer/witness.graphml [2020-11-29 20:25:03,551 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:25:03,553 INFO L168 Benchmark]: Toolchain (without parser) took 239735.31 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 37.1 MB in the beginning and 47.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:03,554 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.4 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:25:03,555 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.94 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 41.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:03,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:25:03,556 INFO L168 Benchmark]: Boogie Preprocessor took 39.12 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:25:03,557 INFO L168 Benchmark]: RCFGBuilder took 11900.68 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 49.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:03,558 INFO L168 Benchmark]: TraceAbstraction took 227275.80 ms. Allocated memory is still 71.3 MB. Free memory was 48.7 MB in the beginning and 49.7 MB in the end (delta: -979.6 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:03,559 INFO L168 Benchmark]: Witness Printer took 68.43 ms. Allocated memory is still 71.3 MB. Free memory was 49.7 MB in the beginning and 48.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:25:03,562 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 40.4 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 371.94 ms. Allocated memory is still 58.7 MB. Free memory was 36.9 MB in the beginning and 41.9 MB in the end (delta: -5.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.04 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 40.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.12 ms. Allocated memory is still 58.7 MB. Free memory was 40.0 MB in the beginning and 38.6 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 11900.68 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 38.5 MB in the beginning and 49.0 MB in the end (delta: -10.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 227275.80 ms. Allocated memory is still 71.3 MB. Free memory was 48.7 MB in the beginning and 49.7 MB in the end (delta: -979.6 kB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. * Witness Printer took 68.43 ms. Allocated memory is still 71.3 MB. Free memory was 49.7 MB in the beginning and 48.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int counter = 0; VAL [counter=0] [L26] int r; [L27] double a, x, s; [L28] a = __VERIFIER_nondet_double() [L29] x = a [L30] s = 3.25 [L31] r = 1 VAL [counter=0] [L33] EXPR counter++ VAL [counter=1] [L33] COND TRUE counter++<100 [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND FALSE !(!(cond)) VAL [counter=1] [L17] COND TRUE !(cond) VAL [counter=1] [L10] __assert_fail("0", "freire2.c", 10, "reach_error") VAL [counter=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 227.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 104.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 105 SDslu, 174 SDs, 0 SdLazy, 117 SolverSat, 35 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 61.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 57.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, 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, 4 MinimizatonAttempts, 31 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 50 ConstructedInterpolants, 1 QuantifiedInterpolants, 2130 SizeOfPredicates, 11 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...