./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.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_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/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 39bbda04ca16eb75ea07b4929f3af02faa55a8e5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:31:01,929 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:31:01,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:31:01,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:31:01,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:31:02,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:31:02,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:31:02,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:31:02,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:31:02,030 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:31:02,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:31:02,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:31:02,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:31:02,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:31:02,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:31:02,045 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:31:02,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:31:02,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:31:02,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:31:02,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:31:02,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:31:02,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:31:02,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:31:02,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:31:02,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:31:02,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:31:02,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:31:02,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:31:02,092 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:31:02,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:31:02,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:31:02,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:31:02,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:31:02,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:31:02,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:31:02,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:31:02,103 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:31:02,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:31:02,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:31:02,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:31:02,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:31:02,111 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:31:02,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:31:02,164 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:31:02,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:31:02,167 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:31:02,167 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:31:02,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:31:02,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:31:02,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:31:02,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:31:02,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:31:02,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:31:02,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:31:02,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:31:02,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:31:02,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:31:02,172 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:31:02,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:31:02,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:31:02,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:31:02,173 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:31:02,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:31:02,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:31:02,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:31:02,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:31:02,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:31:02,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:31:02,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:31:02,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:31:02,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:31:02,176 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_0a9d8093-a0cd-4095-a502-984ded24da6c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39bbda04ca16eb75ea07b4929f3af02faa55a8e5 [2020-11-30 00:31:02,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:31:02,587 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:31:02,591 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:31:02,592 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:31:02,593 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:31:02,595 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c [2020-11-30 00:31:02,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/data/133759822/59f75461526d4e89911fefc390c6273b/FLAGd9717fd7e [2020-11-30 00:31:03,386 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:31:03,387 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_unwindbound2.c [2020-11-30 00:31:03,403 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/data/133759822/59f75461526d4e89911fefc390c6273b/FLAGd9717fd7e [2020-11-30 00:31:03,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/data/133759822/59f75461526d4e89911fefc390c6273b [2020-11-30 00:31:03,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:31:03,734 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:31:03,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:03,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:31:03,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:31:03,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:03" (1/1) ... [2020-11-30 00:31:03,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@792420f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:03, skipping insertion in model container [2020-11-30 00:31:03,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:31:03" (1/1) ... [2020-11-30 00:31:03,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:31:03,774 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:31:04,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:04,048 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:31:04,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:31:04,089 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:31:04,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04 WrapperNode [2020-11-30 00:31:04,090 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:31:04,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:04,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:31:04,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:31:04,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:31:04,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:31:04,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:31:04,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:31:04,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,154 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,156 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... [2020-11-30 00:31:04,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:31:04,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:31:04,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:31:04,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:31:04,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:31:04,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:31:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:31:04,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:31:04,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:31:04,827 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:31:04,828 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-30 00:31:04,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:04 BoogieIcfgContainer [2020-11-30 00:31:04,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:31:04,835 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:31:04,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:31:04,841 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:31:04,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:31:03" (1/3) ... [2020-11-30 00:31:04,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a413a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:31:04, skipping insertion in model container [2020-11-30 00:31:04,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:31:04" (2/3) ... [2020-11-30 00:31:04,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a413a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:31:04, skipping insertion in model container [2020-11-30 00:31:04,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:04" (3/3) ... [2020-11-30 00:31:04,846 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound2.c [2020-11-30 00:31:04,860 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:31:04,865 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-11-30 00:31:04,880 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-30 00:31:04,923 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:31:04,923 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:31:04,924 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:31:04,924 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:31:04,924 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:31:04,924 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:31:04,925 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:31:04,925 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:31:04,947 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-11-30 00:31:04,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:31:04,953 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:31:04,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:31:04,955 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:31:04,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:04,964 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 00:31:04,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:04,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371535809] [2020-11-30 00:31:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:05,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:31:05,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727152619] [2020-11-30 00:31:05,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:05,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:31:05,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:05,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371535809] [2020-11-30 00:31:05,445 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:31:05,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727152619] [2020-11-30 00:31:05,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:31:05,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:31:05,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609821097] [2020-11-30 00:31:05,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:31:05,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:05,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:31:05,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:31:05,481 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 4 states. [2020-11-30 00:31:05,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:05,652 INFO L93 Difference]: Finished difference Result 54 states and 71 transitions. [2020-11-30 00:31:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:31:05,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 00:31:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:31:05,665 INFO L225 Difference]: With dead ends: 54 [2020-11-30 00:31:05,666 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:31:05,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:31:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:31:05,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-30 00:31:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:31:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-30 00:31:05,715 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 6 [2020-11-30 00:31:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:31:05,715 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-30 00:31:05,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:31:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-30 00:31:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:31:05,717 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:31:05,717 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:05,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 00:31:05,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:31:05,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:05,933 INFO L82 PathProgramCache]: Analyzing trace with hash 885278358, now seen corresponding path program 1 times [2020-11-30 00:31:05,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:05,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123077278] [2020-11-30 00:31:05,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:05,968 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:31:05,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039367833] [2020-11-30 00:31:05,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/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 [2020-11-30 00:31:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:06,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:31:06,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:06,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:06,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123077278] [2020-11-30 00:31:06,156 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:31:06,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039367833] [2020-11-30 00:31:06,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:31:06,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:31:06,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898286915] [2020-11-30 00:31:06,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:31:06,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:06,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:31:06,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:31:06,180 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-11-30 00:31:06,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:06,384 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-11-30 00:31:06,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:31:06,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:31:06,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:31:06,388 INFO L225 Difference]: With dead ends: 37 [2020-11-30 00:31:06,388 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 00:31:06,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:31:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 00:31:06,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2020-11-30 00:31:06,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:31:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2020-11-30 00:31:06,398 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 10 [2020-11-30 00:31:06,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:31:06,400 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2020-11-30 00:31:06,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:31:06,401 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2020-11-30 00:31:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:31:06,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:31:06,408 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:06,632 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:06,633 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:31:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:06,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1673782672, now seen corresponding path program 1 times [2020-11-30 00:31:06,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:06,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149833253] [2020-11-30 00:31:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:06,648 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:31:06,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [165036093] [2020-11-30 00:31:06,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/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 [2020-11-30 00:31:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:06,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 00:31:06,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:06,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:06,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149833253] [2020-11-30 00:31:06,756 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:31:06,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165036093] [2020-11-30 00:31:06,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:31:06,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-30 00:31:06,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132845463] [2020-11-30 00:31:06,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:31:06,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:06,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:31:06,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:31:06,759 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2020-11-30 00:31:06,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:06,810 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-30 00:31:06,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:31:06,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-30 00:31:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:31:06,813 INFO L225 Difference]: With dead ends: 30 [2020-11-30 00:31:06,813 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 00:31:06,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:31:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 00:31:06,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 00:31:06,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:31:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-11-30 00:31:06,823 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 11 [2020-11-30 00:31:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:31:06,824 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-11-30 00:31:06,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:31:06,824 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-11-30 00:31:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:31:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:31:06,827 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:07,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:07,041 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:31:07,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:07,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2060760439, now seen corresponding path program 1 times [2020-11-30 00:31:07,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:07,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678896241] [2020-11-30 00:31:07,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:07,056 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:31:07,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [523683616] [2020-11-30 00:31:07,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/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 [2020-11-30 00:31:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:31:07,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:31:07,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:07,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:31:07,236 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 00:31:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:07,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678896241] [2020-11-30 00:31:07,270 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:31:07,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523683616] [2020-11-30 00:31:07,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:31:07,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:31:07,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479372692] [2020-11-30 00:31:07,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:31:07,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:07,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:31:07,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:31:07,273 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 6 states. [2020-11-30 00:31:07,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:07,442 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-11-30 00:31:07,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:31:07,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-30 00:31:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:31:07,444 INFO L225 Difference]: With dead ends: 28 [2020-11-30 00:31:07,444 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 00:31:07,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:31:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 00:31:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:31:07,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:31:07,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-11-30 00:31:07,450 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 13 [2020-11-30 00:31:07,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:31:07,451 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-11-30 00:31:07,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:31:07,451 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-11-30 00:31:07,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:31:07,452 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:31:07,452 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-11-30 00:31:07,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:07,677 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:31:07,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:07,677 INFO L82 PathProgramCache]: Analyzing trace with hash 542015330, now seen corresponding path program 2 times [2020-11-30 00:31:07,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:07,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062489279] [2020-11-30 00:31:07,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:07,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:31:07,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [542796518] [2020-11-30 00:31:07,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/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 [2020-11-30 00:31:07,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:31:07,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:31:07,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:31:07,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:31:07,861 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:31:07,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062489279] [2020-11-30 00:31:07,862 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:31:07,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542796518] [2020-11-30 00:31:07,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:31:07,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:31:07,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606197759] [2020-11-30 00:31:07,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:31:07,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:31:07,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:31:07,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:31:07,864 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 6 states. [2020-11-30 00:31:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:31:07,940 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-11-30 00:31:07,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:31:07,944 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-30 00:31:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:31:07,945 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:31:07,945 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 00:31:07,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:31:07,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 00:31:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 00:31:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:31:07,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 19 transitions. [2020-11-30 00:31:07,951 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 19 transitions. Word has length 14 [2020-11-30 00:31:07,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:31:07,951 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 19 transitions. [2020-11-30 00:31:07,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:31:07,951 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 19 transitions. [2020-11-30 00:31:07,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:31:07,952 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:31:07,952 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:31:08,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:08,161 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:31:08,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:31:08,162 INFO L82 PathProgramCache]: Analyzing trace with hash -377436604, now seen corresponding path program 2 times [2020-11-30 00:31:08,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:31:08,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251768595] [2020-11-30 00:31:08,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:31:08,180 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:31:08,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [308015361] [2020-11-30 00:31:08,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:08,229 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:31:08,229 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-30 00:31:08,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:08,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:31:08,250 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:31:08,274 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:31:08,275 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:31:08,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:31:08,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:31:08 BoogieIcfgContainer [2020-11-30 00:31:08,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:31:08,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:31:08,511 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:31:08,511 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:31:08,512 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:31:04" (3/4) ... [2020-11-30 00:31:08,514 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:31:08,599 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0a9d8093-a0cd-4095-a502-984ded24da6c/bin/uautomizer/witness.graphml [2020-11-30 00:31:08,600 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:31:08,609 INFO L168 Benchmark]: Toolchain (without parser) took 4870.20 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 62.1 MB in the beginning and 51.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:08,610 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:08,611 INFO L168 Benchmark]: CACSL2BoogieTranslator took 352.11 ms. Allocated memory is still 90.2 MB. Free memory was 61.8 MB in the beginning and 67.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:08,613 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.01 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 66.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:08,614 INFO L168 Benchmark]: Boogie Preprocessor took 25.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.7 MB in the end (delta: 934.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:31:08,614 INFO L168 Benchmark]: RCFGBuilder took 672.38 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 52.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:08,615 INFO L168 Benchmark]: TraceAbstraction took 3674.93 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 54.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:08,616 INFO L168 Benchmark]: Witness Printer took 92.43 ms. Allocated memory is still 109.1 MB. Free memory was 54.5 MB in the beginning and 51.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:31:08,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 90.2 MB. Free memory is still 49.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 352.11 ms. Allocated memory is still 90.2 MB. Free memory was 61.8 MB in the beginning and 67.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.01 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 66.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.30 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.7 MB in the end (delta: 934.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 672.38 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 52.5 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3674.93 ms. Allocated memory was 90.2 MB in the beginning and 109.1 MB in the end (delta: 18.9 MB). Free memory was 52.2 MB in the beginning and 54.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * Witness Printer took 92.43 ms. Allocated memory is still 109.1 MB. Free memory was 54.5 MB in the beginning and 51.5 MB in the end (delta: 3.0 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: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int counter = 0; VAL [counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [counter=0] [L27] EXPR counter++ VAL [counter=1] [L27] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=1] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=1] [L27] EXPR counter++ VAL [counter=2] [L27] COND TRUE counter++<2 [L10] COND FALSE !(!(cond)) VAL [counter=2] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [counter=2] [L27] EXPR counter++ VAL [counter=3] [L27] COND FALSE !(counter++<2) [L10] COND TRUE !(cond) VAL [counter=3] [L3] __assert_fail("0", "ps4-ll.c", 3, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.5s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 47 SDslu, 159 SDs, 0 SdLazy, 112 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 2263 SizeOfPredicates, 16 NumberOfNonLiveVariables, 366 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/19 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...