./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/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 6bd4123f85253583d72ef5458140a79098c2ee0c ................................................................................................................................................................................................................................................................................................. 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_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/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 6bd4123f85253583d72ef5458140a79098c2ee0c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:28:47,157 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:28:47,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:28:47,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:28:47,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:28:47,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:28:47,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:28:47,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:28:47,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:28:47,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:28:47,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:28:47,264 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:28:47,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:28:47,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:28:47,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:28:47,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:28:47,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:28:47,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:28:47,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:28:47,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:28:47,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:28:47,282 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:28:47,284 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:28:47,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:28:47,289 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:28:47,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:28:47,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:28:47,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:28:47,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:28:47,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:28:47,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:28:47,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:28:47,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:28:47,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:28:47,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:28:47,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:28:47,302 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:28:47,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:28:47,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:28:47,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:28:47,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:28:47,306 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:28:47,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:28:47,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:28:47,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:28:47,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:28:47,338 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:28:47,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:28:47,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:28:47,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:28:47,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:28:47,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:28:47,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:28:47,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:28:47,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:28:47,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:28:47,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:28:47,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:28:47,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:28:47,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:28:47,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:28:47,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:28:47,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:28:47,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:28:47,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:28:47,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:28:47,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:28:47,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:28:47,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:28:47,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:28:47,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:28:47,346 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_f4710e68-60cb-4136-a1c1-1a29a5de7917/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bd4123f85253583d72ef5458140a79098c2ee0c [2020-12-01 15:28:47,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:28:47,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:28:47,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:28:47,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:28:47,742 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:28:47,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2020-12-01 15:28:47,832 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/372cf6374/061a1d3243f145a2b537663fc78884b8/FLAG232e37ff7 [2020-12-01 15:28:48,461 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:28:48,462 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2020-12-01 15:28:48,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/372cf6374/061a1d3243f145a2b537663fc78884b8/FLAG232e37ff7 [2020-12-01 15:28:48,829 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/372cf6374/061a1d3243f145a2b537663fc78884b8 [2020-12-01 15:28:48,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:28:48,833 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:28:48,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:28:48,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:28:48,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:28:48,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:28:48" (1/1) ... [2020-12-01 15:28:48,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ecf364c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:48, skipping insertion in model container [2020-12-01 15:28:48,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:28:48" (1/1) ... [2020-12-01 15:28:48,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:28:48,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:28:49,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:28:49,223 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:28:49,263 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:28:49,283 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:28:49,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49 WrapperNode [2020-12-01 15:28:49,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:28:49,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:28:49,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:28:49,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:28:49,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:28:49,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:28:49,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:28:49,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:28:49,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,415 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... [2020-12-01 15:28:49,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:28:49,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:28:49,425 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:28:49,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:28:49,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:28:49,506 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:28:49,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:28:49,507 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:28:49,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:28:49,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:28:49,926 INFO L298 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-01 15:28:49,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:28:49 BoogieIcfgContainer [2020-12-01 15:28:49,928 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:28:49,930 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:28:49,930 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:28:49,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:28:49,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:28:48" (1/3) ... [2020-12-01 15:28:49,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3371787e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:28:49, skipping insertion in model container [2020-12-01 15:28:49,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:49" (2/3) ... [2020-12-01 15:28:49,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3371787e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:28:49, skipping insertion in model container [2020-12-01 15:28:49,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:28:49" (3/3) ... [2020-12-01 15:28:49,958 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound50.c [2020-12-01 15:28:49,987 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:28:49,997 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:28:50,011 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:28:50,049 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:28:50,049 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:28:50,049 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:28:50,050 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:28:50,050 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:28:50,050 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:28:50,050 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:28:50,051 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:28:50,065 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-01 15:28:50,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:28:50,072 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:28:50,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:28:50,073 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:28:50,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:28:50,080 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2020-12-01 15:28:50,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:28:50,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768857696] [2020-12-01 15:28:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:28:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:28:50,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:28:50,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768857696] [2020-12-01 15:28:50,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:28:50,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:28:50,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511096486] [2020-12-01 15:28:50,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:28:50,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:28:50,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:28:50,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:28:50,356 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-01 15:28:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:28:50,379 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2020-12-01 15:28:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:28:50,381 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-01 15:28:50,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:28:50,389 INFO L225 Difference]: With dead ends: 53 [2020-12-01 15:28:50,389 INFO L226 Difference]: Without dead ends: 24 [2020-12-01 15:28:50,392 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 [2020-12-01 15:28:50,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-01 15:28:50,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-01 15:28:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 15:28:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-01 15:28:50,433 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2020-12-01 15:28:50,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:28:50,434 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-01 15:28:50,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:28:50,434 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-01 15:28:50,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:28:50,435 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:28:50,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:28:50,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:28:50,436 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:28:50,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:28:50,437 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2020-12-01 15:28:50,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:28:50,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808917204] [2020-12-01 15:28:50,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:28:50,478 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 15:28:50,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789232212] [2020-12-01 15:28:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/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 [2020-12-01 15:28:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:28:50,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 15:28:50,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:28:50,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808917204] [2020-12-01 15:28:50,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 15:28:50,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789232212] [2020-12-01 15:28:50,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-01 15:28:50,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:28:50,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-01 15:28:50,852 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-01 15:28:50,852 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:28:51,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 15:28:51,074 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-01 15:28:51,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:28:51 BoogieIcfgContainer [2020-12-01 15:28:51,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:28:51,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:28:51,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:28:51,076 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:28:51,077 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:28:49" (3/4) ... [2020-12-01 15:28:51,080 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:28:51,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:28:51,082 INFO L168 Benchmark]: Toolchain (without parser) took 2246.98 ms. Allocated memory is still 94.4 MB. Free memory was 61.0 MB in the beginning and 55.0 MB in the end (delta: 6.0 MB). Peak memory consumption was 6.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:28:51,083 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:28:51,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.12 ms. Allocated memory is still 94.4 MB. Free memory was 60.9 MB in the beginning and 71.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:28:51,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 75.85 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:28:51,085 INFO L168 Benchmark]: Boogie Preprocessor took 58.89 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:28:51,086 INFO L168 Benchmark]: RCFGBuilder took 503.74 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 54.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:28:51,087 INFO L168 Benchmark]: TraceAbstraction took 1145.16 ms. Allocated memory is still 94.4 MB. Free memory was 53.9 MB in the beginning and 55.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 400.8 kB. Max. memory is 16.1 GB. [2020-12-01 15:28:51,088 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 94.4 MB. Free memory was 55.5 MB in the beginning and 55.0 MB in the end (delta: 494.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:28:51,093 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 94.4 MB. Free memory was 68.6 MB in the beginning and 68.6 MB in the end (delta: 30.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.12 ms. Allocated memory is still 94.4 MB. Free memory was 60.9 MB in the beginning and 71.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 75.85 ms. Allocated memory is still 94.4 MB. Free memory was 71.5 MB in the beginning and 69.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.89 ms. Allocated memory is still 94.4 MB. Free memory was 69.8 MB in the beginning and 68.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 503.74 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 54.3 MB in the end (delta: 14.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1145.16 ms. Allocated memory is still 94.4 MB. Free memory was 53.9 MB in the beginning and 55.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 400.8 kB. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 94.4 MB. Free memory was 55.5 MB in the beginning and 55.0 MB in the end (delta: 494.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] unsigned a, b; [L21] unsigned x, y, u, v; [L22] a = __VERIFIER_nondet_uint() [L9] COND FALSE !(!cond) [L24] b = __VERIFIER_nondet_uint() [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L9] COND FALSE !(!cond) [L32] x = a [L33] y = b [L34] u = b [L35] v = a [L37] COND TRUE 1 [L12] COND TRUE !(cond) [L5] __assert_fail("0", "lcm2.c", 5, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 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=28occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 256 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 0.2.0-69874e2 [2020-12-01 15:28:53,863 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-12-01 15:28:53,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:28:53,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:28:53,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:28:53,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:28:53,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:28:53,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:28:53,946 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:28:53,946 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:28:53,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:28:53,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:28:53,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:28:53,950 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:28:53,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:28:53,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:28:53,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:28:53,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:28:53,981 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:28:53,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:28:53,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:28:53,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:28:53,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:28:53,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:28:53,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:28:53,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:28:53,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:28:53,984 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:28:53,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:28:53,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:28:53,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:28:53,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:28:53,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:28:53,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:28:53,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:28:53,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:28:53,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:28:53,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:28:53,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:28:53,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:28:53,990 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:28:53,990 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:28:53,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:28:53,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:28:53,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:28:53,991 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_f4710e68-60cb-4136-a1c1-1a29a5de7917/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bd4123f85253583d72ef5458140a79098c2ee0c [2020-12-01 15:28:54,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:28:54,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:28:54,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:28:54,471 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:28:54,472 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:28:54,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2020-12-01 15:28:54,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/f8dba0d9a/5901ef52cd83497b8e1ac4b13723d67c/FLAG4ab1ca709 [2020-12-01 15:28:55,162 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:28:55,163 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/sv-benchmarks/c/nla-digbench-scaling/lcm2_valuebound50.c [2020-12-01 15:28:55,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/f8dba0d9a/5901ef52cd83497b8e1ac4b13723d67c/FLAG4ab1ca709 [2020-12-01 15:28:55,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/data/f8dba0d9a/5901ef52cd83497b8e1ac4b13723d67c [2020-12-01 15:28:55,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:28:55,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:28:55,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:28:55,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:28:55,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:28:55,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:55,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0a03e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55, skipping insertion in model container [2020-12-01 15:28:55,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:55,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:28:55,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:28:55,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:28:55,878 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:28:55,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:28:55,975 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:28:55,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55 WrapperNode [2020-12-01 15:28:55,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:28:55,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:28:55,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:28:55,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:28:55,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:28:56,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:28:56,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:28:56,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:28:56,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,063 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,072 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... [2020-12-01 15:28:56,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:28:56,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:28:56,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:28:56,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:28:56,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:28:56,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:28:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:28:56,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:28:56,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:28:56,794 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:28:56,794 INFO L298 CfgBuilder]: Removed 25 assume(true) statements. [2020-12-01 15:28:56,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:28:56 BoogieIcfgContainer [2020-12-01 15:28:56,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:28:56,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:28:56,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:28:56,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:28:56,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:28:55" (1/3) ... [2020-12-01 15:28:56,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f0d4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:28:56, skipping insertion in model container [2020-12-01 15:28:56,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:28:55" (2/3) ... [2020-12-01 15:28:56,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f0d4e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:28:56, skipping insertion in model container [2020-12-01 15:28:56,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:28:56" (3/3) ... [2020-12-01 15:28:56,808 INFO L111 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound50.c [2020-12-01 15:28:56,825 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:28:56,829 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-01 15:28:56,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-01 15:28:56,891 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:28:56,893 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:28:56,893 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:28:56,894 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:28:56,894 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:28:56,895 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:28:56,895 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:28:56,895 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:28:56,914 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-01 15:28:56,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:28:56,921 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:28:56,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:28:56,923 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:28:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:28:56,931 INFO L82 PathProgramCache]: Analyzing trace with hash 822857436, now seen corresponding path program 1 times [2020-12-01 15:28:56,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:28:56,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [345574759] [2020-12-01 15:28:56,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-01 15:28:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:28:57,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:28:57,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:28:57,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:28:57,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:28:57,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:28:57,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [345574759] [2020-12-01 15:28:57,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:28:57,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:28:57,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782472607] [2020-12-01 15:28:57,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:28:57,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:28:57,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:28:57,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:28:57,372 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-01 15:28:57,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:28:57,394 INFO L93 Difference]: Finished difference Result 53 states and 74 transitions. [2020-12-01 15:28:57,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:28:57,396 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-12-01 15:28:57,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:28:57,406 INFO L225 Difference]: With dead ends: 53 [2020-12-01 15:28:57,406 INFO L226 Difference]: Without dead ends: 24 [2020-12-01 15:28:57,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:28:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-01 15:28:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-12-01 15:28:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-01 15:28:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-12-01 15:28:57,444 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 17 [2020-12-01 15:28:57,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:28:57,444 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-12-01 15:28:57,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:28:57,445 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-12-01 15:28:57,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-01 15:28:57,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:28:57,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:28:57,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:28:57,650 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:28:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:28:57,651 INFO L82 PathProgramCache]: Analyzing trace with hash 2114165096, now seen corresponding path program 1 times [2020-12-01 15:28:57,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:28:57,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [820248578] [2020-12-01 15:28:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-01 15:28:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:28:58,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 15:28:58,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:28:58,977 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2020-12-01 15:28:59,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:28:59,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:29:00,438 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-01 15:29:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:29:00,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [820248578] [2020-12-01 15:29:00,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:29:00,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 4] imperfect sequences [] total 14 [2020-12-01 15:29:00,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28676554] [2020-12-01 15:29:00,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-01 15:29:00,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:29:00,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-01 15:29:00,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-12-01 15:29:00,508 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 14 states. [2020-12-01 15:29:01,976 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2020-12-01 15:29:02,174 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-12-01 15:29:06,425 WARN L197 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-12-01 15:29:10,300 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 16 [2020-12-01 15:29:12,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:29:12,826 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-01 15:29:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 15:29:12,830 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-12-01 15:29:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:29:12,831 INFO L225 Difference]: With dead ends: 41 [2020-12-01 15:29:12,832 INFO L226 Difference]: Without dead ends: 33 [2020-12-01 15:29:12,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2020-12-01 15:29:12,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-01 15:29:12,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-12-01 15:29:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:29:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-12-01 15:29:12,843 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2020-12-01 15:29:12,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:29:12,843 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-12-01 15:29:12,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-01 15:29:12,844 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-12-01 15:29:12,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:29:12,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:29:12,849 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:29:13,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:29:13,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:29:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:29:13,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1635101360, now seen corresponding path program 1 times [2020-12-01 15:29:13,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:29:13,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440028564] [2020-12-01 15:29:13,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-01 15:29:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:29:13,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-01 15:29:13,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:29:14,839 WARN L197 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-12-01 15:29:15,180 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24 [2020-12-01 15:29:26,483 WARN L197 SmtUtils]: Spent 10.60 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-01 15:29:33,057 WARN L197 SmtUtils]: Spent 1.94 s on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-12-01 15:29:33,709 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 24 [2020-12-01 15:29:33,731 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:29:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:29:35,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:29:45,248 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-01 15:29:47,631 WARN L197 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-01 15:29:53,177 WARN L197 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-12-01 15:29:53,201 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:29:53,202 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:29:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 15:29:53,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440028564] [2020-12-01 15:29:53,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:29:53,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 6] total 23 [2020-12-01 15:29:53,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055346026] [2020-12-01 15:29:53,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-01 15:29:53,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:29:53,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-01 15:29:53,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=379, Unknown=3, NotChecked=0, Total=506 [2020-12-01 15:29:53,339 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 23 states. [2020-12-01 15:29:56,083 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2020-12-01 15:29:57,788 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 24 [2020-12-01 15:29:57,976 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-12-01 15:30:02,384 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2020-12-01 15:30:07,679 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-12-01 15:30:41,609 WARN L197 SmtUtils]: Spent 21.50 s on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2020-12-01 15:30:52,592 WARN L197 SmtUtils]: Spent 6.61 s on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-12-01 15:31:08,022 WARN L197 SmtUtils]: Spent 15.19 s on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2020-12-01 15:31:12,994 WARN L197 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-12-01 15:31:20,956 WARN L197 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 50 DAG size of output: 33 [2020-12-01 15:31:37,815 WARN L197 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2020-12-01 15:31:41,044 WARN L197 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-01 15:31:46,295 WARN L197 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-12-01 15:31:58,422 WARN L197 SmtUtils]: Spent 1.63 s on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-12-01 15:32:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:32:00,876 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-12-01 15:32:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-01 15:32:00,877 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-12-01 15:32:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:32:00,878 INFO L225 Difference]: With dead ends: 57 [2020-12-01 15:32:00,878 INFO L226 Difference]: Without dead ends: 49 [2020-12-01 15:32:00,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 131.7s TimeCoverageRelationStatistics Valid=539, Invalid=1250, Unknown=17, NotChecked=0, Total=1806 [2020-12-01 15:32:00,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-01 15:32:00,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2020-12-01 15:32:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-01 15:32:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-12-01 15:32:00,892 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 25 [2020-12-01 15:32:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:32:00,893 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-12-01 15:32:00,893 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-01 15:32:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-12-01 15:32:00,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 15:32:00,894 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:32:00,895 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:32:01,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:32:01,110 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:32:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:32:01,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1635041778, now seen corresponding path program 1 times [2020-12-01 15:32:01,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:32:01,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146287456] [2020-12-01 15:32:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/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 [2020-12-01 15:32:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:32:02,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-01 15:32:02,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:32:03,084 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-12-01 15:32:07,924 WARN L197 SmtUtils]: Spent 3.96 s on a formula simplification. DAG size of input: 39 DAG size of output: 27 [2020-12-01 15:32:08,330 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-12-01 15:32:08,342 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-01 15:32:08,347 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-01 15:32:08,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:32:08,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:32:13,762 WARN L197 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-12-01 15:32:15,909 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-01 15:32:18,281 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-12-01 15:32:18,287 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-01 15:32:18,287 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:32:18,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-01 15:32:18,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146287456] [2020-12-01 15:32:18,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-01 15:32:18,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 23 [2020-12-01 15:32:18,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571096291] [2020-12-01 15:32:18,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-01 15:32:18,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:32:18,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-01 15:32:18,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2020-12-01 15:32:18,306 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 23 states. [2020-12-01 15:32:20,866 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 11 [2020-12-01 15:32:21,688 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2020-12-01 15:32:23,177 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-12-01 15:32:25,162 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 29 [2020-12-01 15:32:29,205 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 44 DAG size of output: 27 [2020-12-01 15:32:33,521 WARN L197 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-12-01 15:32:35,895 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2020-12-01 15:32:52,796 WARN L197 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-01 15:32:55,097 WARN L197 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-12-01 15:32:57,350 WARN L197 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-01 15:33:11,883 WARN L197 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 43 DAG size of output: 26 [2020-12-01 15:33:11,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:33:11,944 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2020-12-01 15:33:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-01 15:33:11,947 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 25 [2020-12-01 15:33:11,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:33:11,948 INFO L225 Difference]: With dead ends: 51 [2020-12-01 15:33:11,948 INFO L226 Difference]: Without dead ends: 0 [2020-12-01 15:33:11,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 35.1s TimeCoverageRelationStatistics Valid=466, Invalid=1094, Unknown=0, NotChecked=0, Total=1560 [2020-12-01 15:33:11,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-01 15:33:11,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-01 15:33:11,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-01 15:33:11,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-01 15:33:11,950 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-12-01 15:33:11,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:33:11,950 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-01 15:33:11,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-12-01 15:33:11,950 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-01 15:33:11,950 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-01 15:33:12,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:33:12,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-01 15:33:12,358 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 61 [2020-12-01 15:33:18,141 WARN L197 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 62 DAG size of output: 27 [2020-12-01 15:33:20,683 WARN L197 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 58 DAG size of output: 33 [2020-12-01 15:33:20,690 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:33:20,690 INFO L265 CegarLoopResult]: At program point L56(lines 19 57) the Hoare annotation is: true [2020-12-01 15:33:20,690 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-01 15:33:20,690 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-01 15:33:20,691 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-01 15:33:20,691 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-12-01 15:33:20,691 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:33:20,691 INFO L258 CegarLoopResult]: At program point L12-1(lines 40 41) the Hoare annotation is: (and (bvuge ULTIMATE.start_main_~b~0 (_ bv1 32)) (= (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0) (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0)) (bvmul (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (_ bv2 32))) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond) (bvule ULTIMATE.start_main_~a~0 (_ bv50 32)) (bvule ULTIMATE.start_main_~b~0 (_ bv50 32)) (bvuge ULTIMATE.start_main_~a~0 (_ bv1 32))) [2020-12-01 15:33:20,691 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-12-01 15:33:20,694 INFO L265 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: true [2020-12-01 15:33:20,694 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:33:20,695 INFO L262 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:33:20,695 INFO L262 CegarLoopResult]: For program point L8-2(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:33:20,695 INFO L262 CegarLoopResult]: For program point L8-3(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:33:20,695 INFO L262 CegarLoopResult]: For program point L8-4(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:33:20,695 INFO L262 CegarLoopResult]: For program point L8-5(lines 8 10) no Hoare annotation was computed. [2020-12-01 15:33:20,695 INFO L262 CegarLoopResult]: For program point L37-2(lines 37 50) no Hoare annotation was computed. [2020-12-01 15:33:20,696 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-01 15:33:20,696 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:33:20,696 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-01 15:33:20,696 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-01 15:33:20,696 INFO L262 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-12-01 15:33:20,697 INFO L262 CegarLoopResult]: For program point L9-4(line 9) no Hoare annotation was computed. [2020-12-01 15:33:20,697 INFO L262 CegarLoopResult]: For program point L9-6(line 9) no Hoare annotation was computed. [2020-12-01 15:33:20,697 INFO L262 CegarLoopResult]: For program point L9-8(line 9) no Hoare annotation was computed. [2020-12-01 15:33:20,697 INFO L262 CegarLoopResult]: For program point L9-10(line 9) no Hoare annotation was computed. [2020-12-01 15:33:20,697 INFO L262 CegarLoopResult]: For program point L43(lines 43 49) no Hoare annotation was computed. [2020-12-01 15:33:20,698 INFO L258 CegarLoopResult]: At program point L43-2(lines 37 50) the Hoare annotation is: (let ((.cse0 (bvuge ULTIMATE.start_main_~b~0 (_ bv1 32))) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (bvule ULTIMATE.start_main_~a~0 (_ bv50 32))) (.cse3 (bvule ULTIMATE.start_main_~b~0 (_ bv50 32))) (.cse4 (bvuge ULTIMATE.start_main_~a~0 (_ bv1 32)))) (or (and .cse0 (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~b~0) .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0) (= ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~a~0) .cse2 .cse3 .cse4) (and .cse0 (= (bvadd (bvmul ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0) (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0)) (bvmul (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0) (_ bv2 32))) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse1 .cse2 .cse3 .cse4))) [2020-12-01 15:33:20,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:33:20 BoogieIcfgContainer [2020-12-01 15:33:20,734 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:33:20,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:33:20,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:33:20,735 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:33:20,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:28:56" (3/4) ... [2020-12-01 15:33:20,740 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-01 15:33:20,752 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-12-01 15:33:20,753 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-01 15:33:20,753 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-01 15:33:20,753 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:33:20,754 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-01 15:33:20,838 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f4710e68-60cb-4136-a1c1-1a29a5de7917/bin/uautomizer/witness.graphml [2020-12-01 15:33:20,838 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:33:20,841 INFO L168 Benchmark]: Toolchain (without parser) took 265270.45 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 58.6 MB in the beginning and 47.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:20,844 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:20,845 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.34 ms. Allocated memory is still 73.4 MB. Free memory was 58.6 MB in the beginning and 57.8 MB in the end (delta: 793.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:20,845 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.57 ms. Allocated memory is still 73.4 MB. Free memory was 57.8 MB in the beginning and 56.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:20,846 INFO L168 Benchmark]: Boogie Preprocessor took 37.63 ms. Allocated memory is still 73.4 MB. Free memory was 56.0 MB in the beginning and 54.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:33:20,846 INFO L168 Benchmark]: RCFGBuilder took 710.88 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 39.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:20,847 INFO L168 Benchmark]: TraceAbstraction took 263936.40 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 39.2 MB in the beginning and 51.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:20,847 INFO L168 Benchmark]: Witness Printer took 103.14 ms. Allocated memory is still 104.9 MB. Free memory was 51.0 MB in the beginning and 47.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:33:20,852 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 73.4 MB. Free memory is still 55.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 400.34 ms. Allocated memory is still 73.4 MB. Free memory was 58.6 MB in the beginning and 57.8 MB in the end (delta: 793.9 kB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.57 ms. Allocated memory is still 73.4 MB. Free memory was 57.8 MB in the beginning and 56.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.63 ms. Allocated memory is still 73.4 MB. Free memory was 56.0 MB in the beginning and 54.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 710.88 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 39.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 263936.40 ms. Allocated memory was 73.4 MB in the beginning and 104.9 MB in the end (delta: 31.5 MB). Free memory was 39.2 MB in the beginning and 51.0 MB in the end (delta: -11.8 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 103.14 ms. Allocated memory is still 104.9 MB. Free memory was 51.0 MB in the beginning and 47.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((~bvuge32(b, 1bv32) && ~bvadd64(~bvmul32(y, v), ~bvmul32(x, u)) == ~bvmul32(~bvmul32(a, b), 2bv32)) && ~bvadd64(cond, 4294967295bv32) == 0bv32) && 1bv32 == cond) && ~bvule32(a, 50bv32)) && ~bvule32(b, 50bv32)) && ~bvuge32(a, 1bv32) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((((((((~bvuge32(b, 1bv32) && y == b) && 1bv32 == cond) && b == u) && a == v) && x == a) && ~bvule32(a, 50bv32)) && ~bvule32(b, 50bv32)) && ~bvuge32(a, 1bv32)) || ((((((~bvuge32(b, 1bv32) && ~bvadd64(~bvmul32(y, v), ~bvmul32(x, u)) == ~bvmul32(~bvmul32(a, b), 2bv32)) && !(cond == 0bv32)) && 1bv32 == cond) && ~bvule32(a, 50bv32)) && ~bvule32(b, 50bv32)) && ~bvuge32(a, 1bv32)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 255.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 193.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 421 SDslu, 76 SDs, 0 SdLazy, 507 SolverSat, 382 SolverUnsat, 24 SolverUnknown, 0 SolverNotchecked, 78.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 113 SyntacticMatches, 4 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 171.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, 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, 12 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 22 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 1765 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 4 FomulaSimplificationsInter, 298 FormulaSimplificationTreeSizeReductionInter, 8.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.6s SatisfiabilityAnalysisTime, 57.7s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 160 ConstructedInterpolants, 0 QuantifiedInterpolants, 33544 SizeOfPredicates, 53 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 14/32 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 correct! Received shutdown request...