./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/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 42b0614d1b870e5abae2e6c908c15eb732e05fe5 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:16:50,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:16:50,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:16:50,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:16:50,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:16:50,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:16:50,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:16:50,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:16:50,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:16:50,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:16:50,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:16:50,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:16:50,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:16:50,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:16:50,866 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:16:50,869 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:16:50,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:16:50,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:16:50,878 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:16:50,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:16:50,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:16:50,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:16:50,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:16:50,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:16:50,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:16:50,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:16:50,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:16:50,909 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:16:50,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:16:50,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:16:50,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:16:50,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:16:50,917 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:16:50,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:16:50,920 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:16:50,921 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:16:50,922 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:16:50,922 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:16:50,923 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:16:50,924 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:16:50,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:16:50,930 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:16:50,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:16:50,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:16:50,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:16:50,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:16:50,979 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:16:50,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:16:50,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:16:50,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:16:50,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:16:50,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:16:50,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:16:50,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:16:50,983 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:16:50,983 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:16:50,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:16:50,984 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:16:50,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:16:50,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:16:50,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:16:50,985 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:16:50,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:16:50,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:50,986 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:16:50,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:16:50,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:16:50,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:16:50,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:16:50,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:16:50,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:16:50,989 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_2444de07-d42f-4e61-872a-8260fd017ccb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42b0614d1b870e5abae2e6c908c15eb732e05fe5 [2020-11-28 03:16:51,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:16:51,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:16:51,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:16:51,335 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:16:51,337 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:16:51,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-11-28 03:16:51,401 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/data/4ed5e930d/5cb553846fa640429c95f9608dd87c89/FLAG4caa20a85 [2020-11-28 03:16:51,854 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:16:51,855 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/sv-benchmarks/c/nla-digbench-scaling/hard-u_unwindbound1.c [2020-11-28 03:16:51,862 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/data/4ed5e930d/5cb553846fa640429c95f9608dd87c89/FLAG4caa20a85 [2020-11-28 03:16:52,260 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/data/4ed5e930d/5cb553846fa640429c95f9608dd87c89 [2020-11-28 03:16:52,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:16:52,265 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:16:52,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:52,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:16:52,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:16:52,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35df7bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52, skipping insertion in model container [2020-11-28 03:16:52,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:16:52,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:16:52,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:52,548 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:16:52,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:16:52,590 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:16:52,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52 WrapperNode [2020-11-28 03:16:52,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:16:52,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:52,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:16:52,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:16:52,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,610 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:16:52,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:16:52,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:16:52,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:16:52,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,660 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... [2020-11-28 03:16:52,665 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:16:52,666 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:16:52,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:16:52,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:16:52,668 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:16:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:16:52,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:16:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:16:52,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:16:52,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2020-11-28 03:16:53,272 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:16:53,272 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-28 03:16:53,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:53 BoogieIcfgContainer [2020-11-28 03:16:53,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:16:53,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:16:53,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:16:53,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:16:53,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:16:52" (1/3) ... [2020-11-28 03:16:53,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab5acab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:53, skipping insertion in model container [2020-11-28 03:16:53,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:16:52" (2/3) ... [2020-11-28 03:16:53,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab5acab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:16:53, skipping insertion in model container [2020-11-28 03:16:53,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:53" (3/3) ... [2020-11-28 03:16:53,290 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-u_unwindbound1.c [2020-11-28 03:16:53,304 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:16:53,308 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-28 03:16:53,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-28 03:16:53,345 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:16:53,345 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:16:53,345 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:16:53,346 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:16:53,346 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:16:53,346 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:16:53,346 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:16:53,346 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:16:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-28 03:16:53,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:53,381 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:53,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:53,382 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:53,392 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-11-28 03:16:53,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:53,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161640905] [2020-11-28 03:16:53,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:53,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161640905] [2020-11-28 03:16:53,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:53,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:16:53,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514661130] [2020-11-28 03:16:53,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:16:53,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:53,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:16:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:53,565 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-28 03:16:53,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:53,588 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-11-28 03:16:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:16:53,589 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 03:16:53,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:53,599 INFO L225 Difference]: With dead ends: 79 [2020-11-28 03:16:53,599 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:16:53,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:16:53,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:16:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:16:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:16:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-28 03:16:53,645 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-11-28 03:16:53,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:53,646 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-28 03:16:53,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:16:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-28 03:16:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:16:53,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:53,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:53,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:16:53,648 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:53,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-28 03:16:53,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:53,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275549152] [2020-11-28 03:16:53,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:53,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275549152] [2020-11-28 03:16:53,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:53,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:53,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983388634] [2020-11-28 03:16:53,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:53,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:53,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:53,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:53,786 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-28 03:16:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,445 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-28 03:16:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:54,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:16:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,447 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:16:54,447 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 03:16:54,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:54,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 03:16:54,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-11-28 03:16:54,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:16:54,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-28 03:16:54,457 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-28 03:16:54,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,457 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-28 03:16:54,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:54,458 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-28 03:16:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:16:54,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:54,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:16:54,459 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1985979217, now seen corresponding path program 1 times [2020-11-28 03:16:54,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907527388] [2020-11-28 03:16:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:54,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907527388] [2020-11-28 03:16:54,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:54,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:16:54,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813590848] [2020-11-28 03:16:54,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:54,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:54,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:54,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:54,527 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-28 03:16:54,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:54,558 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-11-28 03:16:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:16:54,559 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:16:54,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:54,560 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:16:54,560 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:16:54,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:54,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:16:54,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:16:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:16:54,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-28 03:16:54,569 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-11-28 03:16:54,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:54,570 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-28 03:16:54,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:54,570 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-28 03:16:54,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:16:54,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:54,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:54,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:16:54,572 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:54,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-28 03:16:54,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:54,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354555498] [2020-11-28 03:16:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:54,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:54,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354555498] [2020-11-28 03:16:54,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:54,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:54,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222749426] [2020-11-28 03:16:54,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:16:54,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:16:54,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:16:54,693 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-28 03:16:56,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:56,988 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-11-28 03:16:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:56,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:16:56,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:56,989 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:16:56,989 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:16:56,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:16:56,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-28 03:16:56,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:16:56,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-28 03:16:56,997 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-11-28 03:16:56,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:56,997 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-28 03:16:56,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:16:56,997 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-28 03:16:56,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:16:56,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:56,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:56,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:16:56,998 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:56,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:56,999 INFO L82 PathProgramCache]: Analyzing trace with hash -911432462, now seen corresponding path program 1 times [2020-11-28 03:16:56,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:56,999 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471160653] [2020-11-28 03:16:56,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:57,016 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:57,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1216358373] [2020-11-28 03:16:57,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:57,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:16:57,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:57,149 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:57,149 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:57,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471160653] [2020-11-28 03:16:57,243 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:57,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216358373] [2020-11-28 03:16:57,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:57,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:16:57,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317312975] [2020-11-28 03:16:57,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:16:57,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:16:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:57,245 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 6 states. [2020-11-28 03:16:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:57,719 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-11-28 03:16:57,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:16:57,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-28 03:16:57,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:57,726 INFO L225 Difference]: With dead ends: 81 [2020-11-28 03:16:57,726 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:16:57,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:16:57,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:16:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-11-28 03:16:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:16:57,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-11-28 03:16:57,741 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-11-28 03:16:57,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:57,741 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-11-28 03:16:57,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:16:57,741 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-11-28 03:16:57,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:16:57,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:57,743 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:57,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:57,944 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:57,944 INFO L82 PathProgramCache]: Analyzing trace with hash 854054780, now seen corresponding path program 1 times [2020-11-28 03:16:57,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:57,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359321772] [2020-11-28 03:16:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:57,966 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:57,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [75012809] [2020-11-28 03:16:57,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:16:58,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:58,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:58,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359321772] [2020-11-28 03:16:58,124 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:58,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75012809] [2020-11-28 03:16:58,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:58,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:16:58,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119535393] [2020-11-28 03:16:58,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:58,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:58,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:58,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:58,127 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 5 states. [2020-11-28 03:16:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:58,176 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-28 03:16:58,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:58,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:16:58,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:58,180 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:16:58,180 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:16:58,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:58,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:16:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-28 03:16:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-28 03:16:58,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-28 03:16:58,197 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2020-11-28 03:16:58,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:58,197 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-28 03:16:58,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:58,198 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-28 03:16:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:16:58,200 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:58,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:58,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:58,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:58,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:58,421 INFO L82 PathProgramCache]: Analyzing trace with hash 705869687, now seen corresponding path program 1 times [2020-11-28 03:16:58,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:58,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007855866] [2020-11-28 03:16:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:58,443 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:58,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [578983853] [2020-11-28 03:16:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:58,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:16:58,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:58,571 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:16:58,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:16:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:58,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007855866] [2020-11-28 03:16:58,717 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:58,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578983853] [2020-11-28 03:16:58,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:16:58,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-28 03:16:58,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347566462] [2020-11-28 03:16:58,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:16:58,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:58,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:16:58,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:16:58,720 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 7 states. [2020-11-28 03:16:59,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:59,126 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-11-28 03:16:59,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:16:59,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-28 03:16:59,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:59,127 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:16:59,127 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 03:16:59,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:16:59,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 03:16:59,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 30. [2020-11-28 03:16:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:16:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-28 03:16:59,139 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2020-11-28 03:16:59,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:59,140 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-28 03:16:59,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:16:59,140 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-28 03:16:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:16:59,142 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:59,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:59,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:59,352 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:59,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1125726404, now seen corresponding path program 1 times [2020-11-28 03:16:59,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:59,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934668115] [2020-11-28 03:16:59,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:59,368 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:59,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [41021046] [2020-11-28 03:16:59,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:16:59,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:16:59,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:16:59,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:16:59,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934668115] [2020-11-28 03:16:59,461 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:16:59,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41021046] [2020-11-28 03:16:59,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:16:59,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:16:59,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50810582] [2020-11-28 03:16:59,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:16:59,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:16:59,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:16:59,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:16:59,463 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2020-11-28 03:16:59,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:16:59,500 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-28 03:16:59,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:16:59,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-28 03:16:59,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:16:59,501 INFO L225 Difference]: With dead ends: 40 [2020-11-28 03:16:59,501 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:16:59,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:16:59,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:16:59,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:16:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:16:59,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-28 03:16:59,504 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-11-28 03:16:59,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:16:59,504 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-28 03:16:59,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:16:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-28 03:16:59,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:16:59,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:16:59,504 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:16:59,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:59,706 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:16:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:16:59,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1866467861, now seen corresponding path program 1 times [2020-11-28 03:16:59,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:16:59,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554027793] [2020-11-28 03:16:59,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:16:59,717 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:16:59,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18791174] [2020-11-28 03:16:59,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:16:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:59,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:16:59,818 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:16:59,854 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:16:59,854 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:17:00,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:00,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:00 BoogieIcfgContainer [2020-11-28 03:17:00,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:00,094 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:00,094 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:00,094 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:00,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:16:53" (3/4) ... [2020-11-28 03:17:00,096 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:17:00,144 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2444de07-d42f-4e61-872a-8260fd017ccb/bin/uautomizer/witness.graphml [2020-11-28 03:17:00,145 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:00,147 INFO L168 Benchmark]: Toolchain (without parser) took 7880.75 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 58.4 MB in the beginning and 39.5 MB in the end (delta: 18.9 MB). Peak memory consumption was 38.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,147 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:00,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.29 ms. Allocated memory is still 83.9 MB. Free memory was 58.2 MB in the beginning and 60.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 83.9 MB. Free memory was 60.7 MB in the beginning and 58.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,149 INFO L168 Benchmark]: Boogie Preprocessor took 28.99 ms. Allocated memory is still 83.9 MB. Free memory was 58.8 MB in the beginning and 57.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,150 INFO L168 Benchmark]: RCFGBuilder took 613.69 ms. Allocated memory is still 83.9 MB. Free memory was 57.6 MB in the beginning and 41.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,151 INFO L168 Benchmark]: TraceAbstraction took 6812.37 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 40.8 MB in the beginning and 41.6 MB in the end (delta: -795.9 kB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,152 INFO L168 Benchmark]: Witness Printer took 50.63 ms. Allocated memory is still 102.8 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:00,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 83.9 MB. Free memory is still 47.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.29 ms. Allocated memory is still 83.9 MB. Free memory was 58.2 MB in the beginning and 60.7 MB in the end (delta: -2.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.67 ms. Allocated memory is still 83.9 MB. Free memory was 60.7 MB in the beginning and 58.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.99 ms. Allocated memory is still 83.9 MB. Free memory was 58.8 MB in the beginning and 57.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 613.69 ms. Allocated memory is still 83.9 MB. Free memory was 57.6 MB in the beginning and 41.2 MB in the end (delta: 16.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6812.37 ms. Allocated memory was 83.9 MB in the beginning and 102.8 MB in the end (delta: 18.9 MB). Free memory was 40.8 MB in the beginning and 41.6 MB in the end (delta: -795.9 kB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Witness Printer took 50.63 ms. Allocated memory is still 102.8 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] unsigned int r, d, p, q; [L26] A = __VERIFIER_nondet_unsigned_int() [L27] B = __VERIFIER_nondet_unsigned_int() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard-u.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 288 SDslu, 247 SDs, 0 SdLazy, 165 SolverSat, 49 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 3.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 53 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 5223 SizeOfPredicates, 17 NumberOfNonLiveVariables, 319 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 6/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...