./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/matrix-1.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_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 ac6f32953cea7d4ed79f261aa32d63846572fa9f ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/matrix-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 ac6f32953cea7d4ed79f261aa32d63846572fa9f ................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:33:12,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:33:12,087 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:33:12,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:33:12,191 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:33:12,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:33:12,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:33:12,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:33:12,201 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:33:12,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:33:12,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:33:12,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:33:12,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:33:12,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:33:12,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:33:12,212 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:33:12,213 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:33:12,214 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:33:12,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:33:12,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:33:12,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:33:12,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:33:12,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:33:12,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:33:12,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:33:12,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:33:12,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:33:12,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:33:12,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:33:12,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:33:12,236 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:33:12,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:33:12,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:33:12,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:33:12,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:33:12,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:33:12,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:33:12,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:33:12,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:33:12,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:33:12,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:33:12,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:33:12,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:33:12,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:33:12,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:33:12,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:33:12,276 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:33:12,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:33:12,277 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:33:12,277 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:33:12,277 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:33:12,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:33:12,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:33:12,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:33:12,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:33:12,278 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:33:12,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:33:12,279 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:33:12,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:33:12,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:33:12,280 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:33:12,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:33:12,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:33:12,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:33:12,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:33:12,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:33:12,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:33:12,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:33:12,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:33:12,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:33:12,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:33:12,283 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_3784b087-1c10-4e6c-8d78-707aab687ce3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac6f32953cea7d4ed79f261aa32d63846572fa9f [2020-11-30 01:33:12,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:33:12,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:33:12,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:33:12,569 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:33:12,570 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:33:12,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/../../sv-benchmarks/c/loops/matrix-1.c [2020-11-30 01:33:12,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/48a437740/ae22c34bb3df4cfca5044b439a4d60b4/FLAG17d491fe0 [2020-11-30 01:33:13,214 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:33:13,215 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/sv-benchmarks/c/loops/matrix-1.c [2020-11-30 01:33:13,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/48a437740/ae22c34bb3df4cfca5044b439a4d60b4/FLAG17d491fe0 [2020-11-30 01:33:13,577 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/48a437740/ae22c34bb3df4cfca5044b439a4d60b4 [2020-11-30 01:33:13,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:33:13,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:33:13,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:33:13,622 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:33:13,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:33:13,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:33:13" (1/1) ... [2020-11-30 01:33:13,632 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e832a99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:13, skipping insertion in model container [2020-11-30 01:33:13,633 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:33:13" (1/1) ... [2020-11-30 01:33:13,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:33:13,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:33:13,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:33:14,011 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:33:14,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:33:14,067 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:33:14,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14 WrapperNode [2020-11-30 01:33:14,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:33:14,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:33:14,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:33:14,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:33:14,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,140 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:33:14,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:33:14,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:33:14,143 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:33:14,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,164 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... [2020-11-30 01:33:14,192 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:33:14,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:33:14,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:33:14,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:33:14,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:33:14,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:33:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 01:33:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:33:14,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:33:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:33:14,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:33:14,787 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:33:14,788 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 01:33:14,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:33:14 BoogieIcfgContainer [2020-11-30 01:33:14,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:33:14,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:33:14,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:33:14,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:33:14,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:33:13" (1/3) ... [2020-11-30 01:33:14,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7cfbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:33:14, skipping insertion in model container [2020-11-30 01:33:14,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:33:14" (2/3) ... [2020-11-30 01:33:14,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d7cfbbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:33:14, skipping insertion in model container [2020-11-30 01:33:14,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:33:14" (3/3) ... [2020-11-30 01:33:14,805 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2020-11-30 01:33:14,819 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:33:14,824 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:33:14,839 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:33:14,882 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:33:14,883 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:33:14,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:33:14,883 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:33:14,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:33:14,884 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:33:14,884 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:33:14,884 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:33:14,905 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 01:33:14,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:33:14,911 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:33:14,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:33:14,913 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:33:14,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:33:14,921 INFO L82 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2020-11-30 01:33:14,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:33:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063188374] [2020-11-30 01:33:14,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:33:15,046 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:33:15,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1023332411] [2020-11-30 01:33:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:33:15,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:33:15,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:33:15,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:33:15,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063188374] [2020-11-30 01:33:15,229 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:33:15,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023332411] [2020-11-30 01:33:15,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:33:15,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:33:15,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112292363] [2020-11-30 01:33:15,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:33:15,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:33:15,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:33:15,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:33:15,256 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-11-30 01:33:15,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:33:15,325 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2020-11-30 01:33:15,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:33:15,328 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-30 01:33:15,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:33:15,361 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:33:15,375 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:33:15,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:33:15,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:33:15,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2020-11-30 01:33:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:33:15,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-30 01:33:15,457 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2020-11-30 01:33:15,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:33:15,458 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 01:33:15,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:33:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-30 01:33:15,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:33:15,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:33:15,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:33:15,687 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 01:33:15,688 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:33:15,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:33:15,689 INFO L82 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2020-11-30 01:33:15,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:33:15,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565287530] [2020-11-30 01:33:15,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:33:15,708 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:33:15,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946754956] [2020-11-30 01:33:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:33:15,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:33:15,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:33:15,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:33:15,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565287530] [2020-11-30 01:33:15,926 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:33:15,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946754956] [2020-11-30 01:33:15,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:33:15,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:33:15,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150695740] [2020-11-30 01:33:15,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:33:15,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:33:15,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:33:15,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:33:15,931 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 4 states. [2020-11-30 01:33:16,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:33:16,063 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2020-11-30 01:33:16,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:33:16,065 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-30 01:33:16,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:33:16,065 INFO L225 Difference]: With dead ends: 24 [2020-11-30 01:33:16,066 INFO L226 Difference]: Without dead ends: 15 [2020-11-30 01:33:16,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 01:33:16,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-30 01:33:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2020-11-30 01:33:16,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:33:16,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-30 01:33:16,072 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2020-11-30 01:33:16,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:33:16,073 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-30 01:33:16,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:33:16,073 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-30 01:33:16,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:33:16,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:33:16,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:33:16,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:33:16,276 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:33:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:33:16,277 INFO L82 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2020-11-30 01:33:16,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:33:16,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503162372] [2020-11-30 01:33:16,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:33:16,291 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:33:16,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1425323079] [2020-11-30 01:33:16,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:33:16,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 01:33:16,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:33:16,572 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 01:33:16,573 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:18,757 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 91 DAG size of output: 27 [2020-11-30 01:33:18,758 INFO L625 ElimStorePlain]: treesize reduction 398, result has 8.3 percent of original size [2020-11-30 01:33:18,759 INFO L513 ElimStorePlain]: Eliminatee v_prenex_6 vanished before elimination [2020-11-30 01:33:18,759 INFO L513 ElimStorePlain]: Eliminatee v_prenex_14 vanished before elimination [2020-11-30 01:33:18,759 INFO L513 ElimStorePlain]: Eliminatee v_prenex_12 vanished before elimination [2020-11-30 01:33:18,759 INFO L513 ElimStorePlain]: Eliminatee v_prenex_2 vanished before elimination [2020-11-30 01:33:18,784 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2020-11-30 01:33:18,785 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:18,809 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:33:18,809 INFO L513 ElimStorePlain]: Eliminatee v_prenex_10 vanished before elimination [2020-11-30 01:33:18,810 INFO L513 ElimStorePlain]: Eliminatee v_prenex_8 vanished before elimination [2020-11-30 01:33:18,811 INFO L545 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:33:18,812 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:497, output treesize:10 [2020-11-30 01:33:18,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:18,963 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:33:18,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503162372] [2020-11-30 01:33:18,964 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:33:18,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425323079] [2020-11-30 01:33:18,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:33:18,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 01:33:18,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693659477] [2020-11-30 01:33:18,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:33:18,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:33:18,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:33:18,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:33:18,966 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 6 states. [2020-11-30 01:33:19,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:33:19,200 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2020-11-30 01:33:19,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:33:19,201 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-11-30 01:33:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:33:19,202 INFO L225 Difference]: With dead ends: 29 [2020-11-30 01:33:19,202 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 01:33:19,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-11-30 01:33:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 01:33:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 19. [2020-11-30 01:33:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 01:33:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-11-30 01:33:19,209 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-11-30 01:33:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:33:19,209 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-11-30 01:33:19,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:33:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-11-30 01:33:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:33:19,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:33:19,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:33:19,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:33:19,436 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:33:19,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:33:19,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1399075435, now seen corresponding path program 1 times [2020-11-30 01:33:19,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:33:19,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104186202] [2020-11-30 01:33:19,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:33:19,448 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:33:19,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644316220] [2020-11-30 01:33:19,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:33:19,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 01:33:19,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:33:19,598 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-11-30 01:33:19,599 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:19,606 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:33:19,609 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:33:19,610 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2020-11-30 01:33:19,660 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:19,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:33:19,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104186202] [2020-11-30 01:33:19,801 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:33:19,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644316220] [2020-11-30 01:33:19,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:33:19,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-30 01:33:19,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362577361] [2020-11-30 01:33:19,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 01:33:19,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:33:19,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 01:33:19,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:33:19,803 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 7 states. [2020-11-30 01:33:20,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:33:20,147 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-11-30 01:33:20,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 01:33:20,148 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-11-30 01:33:20,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:33:20,149 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:33:20,149 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:33:20,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:33:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:33:20,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-11-30 01:33:20,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:33:20,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2020-11-30 01:33:20,155 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2020-11-30 01:33:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:33:20,156 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2020-11-30 01:33:20,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 01:33:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2020-11-30 01:33:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:33:20,157 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:33:20,157 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:33:20,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:33:20,384 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:33:20,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:33:20,385 INFO L82 PathProgramCache]: Analyzing trace with hash -863591089, now seen corresponding path program 2 times [2020-11-30 01:33:20,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:33:20,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726452865] [2020-11-30 01:33:20,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:33:20,397 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:33:20,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439604196] [2020-11-30 01:33:20,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:20,518 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:33:20,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:33:20,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:33:20,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:33:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:33:20,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726452865] [2020-11-30 01:33:20,592 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:33:20,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439604196] [2020-11-30 01:33:20,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:33:20,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 01:33:20,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347854438] [2020-11-30 01:33:20,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:33:20,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:33:20,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:33:20,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:33:20,595 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 5 states. [2020-11-30 01:33:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:33:20,639 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-30 01:33:20,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:33:20,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-30 01:33:20,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:33:20,641 INFO L225 Difference]: With dead ends: 36 [2020-11-30 01:33:20,641 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 01:33:20,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 01:33:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 01:33:20,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-30 01:33:20,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-30 01:33:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-30 01:33:20,646 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-11-30 01:33:20,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:33:20,647 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-30 01:33:20,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:33:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-30 01:33:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:33:20,647 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:33:20,648 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 01:33:20,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:33:20,860 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:33:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:33:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2141915984, now seen corresponding path program 3 times [2020-11-30 01:33:20,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:33:20,860 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148833782] [2020-11-30 01:33:20,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:33:20,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:33:20,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022525750] [2020-11-30 01:33:20,873 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:33:20,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 01:33:20,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:33:20,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 01:33:20,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:33:21,097 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 01:33:21,098 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,606 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 28 [2020-11-30 01:33:21,607 INFO L625 ElimStorePlain]: treesize reduction 413, result has 8.6 percent of original size [2020-11-30 01:33:21,607 INFO L513 ElimStorePlain]: Eliminatee v_prenex_28 vanished before elimination [2020-11-30 01:33:21,607 INFO L513 ElimStorePlain]: Eliminatee |v_#memory_int_8| vanished before elimination [2020-11-30 01:33:21,608 INFO L513 ElimStorePlain]: Eliminatee v_prenex_16 vanished before elimination [2020-11-30 01:33:21,611 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2020-11-30 01:33:21,612 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,627 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:33:21,627 INFO L513 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2020-11-30 01:33:21,627 INFO L513 ElimStorePlain]: Eliminatee v_prenex_22 vanished before elimination [2020-11-30 01:33:21,627 INFO L513 ElimStorePlain]: Eliminatee v_prenex_20 vanished before elimination [2020-11-30 01:33:21,628 INFO L545 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,629 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:521, output treesize:13 [2020-11-30 01:33:21,665 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,666 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,667 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,671 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,677 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,680 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,735 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 01:33:21,735 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-30 01:33:21,756 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 36 [2020-11-30 01:33:21,757 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,799 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:33:21,799 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 79 [2020-11-30 01:33:21,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,804 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,878 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:33:21,878 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 82 [2020-11-30 01:33:21,879 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,881 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 01:33:21,902 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,914 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 01:33:21,915 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:21,989 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:33:21,989 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 85 [2020-11-30 01:33:21,991 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:21,994 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:22,004 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 01:33:22,005 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-11-30 01:33:22,831 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2020-11-30 01:33:22,833 INFO L625 ElimStorePlain]: treesize reduction 104, result has 77.0 percent of original size [2020-11-30 01:33:22,837 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-11-30 01:33:22,838 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 2 variables, input treesize:669, output treesize:255 [2020-11-30 01:33:23,083 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-11-30 01:33:23,110 INFO L603 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-11-30 01:33:23,115 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:23,120 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:23,129 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 01:33:23,141 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 2, 2, 2, 2, 1] term [2020-11-30 01:33:23,142 INFO L603 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-11-30 01:33:23,170 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,180 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,199 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,222 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,241 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:23,257 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,461 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,493 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:23,505 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,521 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,542 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,552 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,562 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:23,569 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-30 01:33:23,830 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:24,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:27,740 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:33:30,116 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:32,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-30 01:33:35,344 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,352 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,383 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,405 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,423 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,428 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,433 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,437 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,441 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-30 01:33:35,444 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,453 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,469 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,475 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,483 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:35,499 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:35,693 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:36,404 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:38,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:39,401 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:40,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:41,494 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:41,496 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:41,498 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,502 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,506 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,512 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,514 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,516 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 4 disjuncts [2020-11-30 01:33:41,517 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:41,522 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:41,529 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,533 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:41,541 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-11-30 01:33:41,550 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-11-30 01:33:41,689 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:42,147 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:43,287 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:44,417 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:45,519 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-30 01:33:46,296 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:46,582 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:46,885 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:47,088 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:49,248 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:49,670 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:50,149 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:50,551 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:50,703 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:51,903 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:52,095 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:52,275 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:52,734 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:33:52,898 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 01:34:28,563 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-30 01:34:28,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148833782] [2020-11-30 01:34:28,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:34:28,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022525750] [2020-11-30 01:34:28,565 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-30 01:34:28,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:34:28,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-30 01:34:28,565 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-11-30 01:34:28,565 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:34:28,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:34:28,789 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-30 01:34:28,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:34:28 BoogieIcfgContainer [2020-11-30 01:34:28,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:34:28,792 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:34:28,792 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:34:28,792 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:34:28,793 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:33:14" (3/4) ... [2020-11-30 01:34:28,799 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:34:28,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:34:28,800 INFO L168 Benchmark]: Toolchain (without parser) took 75184.05 ms. Allocated memory was 98.6 MB in the beginning and 463.5 MB in the end (delta: 364.9 MB). Free memory was 76.4 MB in the beginning and 361.4 MB in the end (delta: -285.0 MB). Peak memory consumption was 79.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:28,801 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:34:28,802 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.38 ms. Allocated memory is still 98.6 MB. Free memory was 76.2 MB in the beginning and 75.7 MB in the end (delta: 474.2 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:28,803 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.59 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:28,803 INFO L168 Benchmark]: Boogie Preprocessor took 50.76 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 73.2 MB in the end (delta: 873.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:34:28,807 INFO L168 Benchmark]: RCFGBuilder took 599.09 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 59.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:28,808 INFO L168 Benchmark]: TraceAbstraction took 73995.32 ms. Allocated memory was 98.6 MB in the beginning and 463.5 MB in the end (delta: 364.9 MB). Free memory was 58.9 MB in the beginning and 361.4 MB in the end (delta: -302.6 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:28,808 INFO L168 Benchmark]: Witness Printer took 7.45 ms. Allocated memory is still 463.5 MB. Free memory is still 361.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:34:28,812 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 98.6 MB. Free memory is still 61.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 448.38 ms. Allocated memory is still 98.6 MB. Free memory was 76.2 MB in the beginning and 75.7 MB in the end (delta: 474.2 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.59 ms. Allocated memory is still 98.6 MB. Free memory was 75.7 MB in the beginning and 74.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 50.76 ms. Allocated memory is still 98.6 MB. Free memory was 74.0 MB in the beginning and 73.2 MB in the end (delta: 873.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 599.09 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 59.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 73995.32 ms. Allocated memory was 98.6 MB in the beginning and 463.5 MB in the end (delta: 364.9 MB). Free memory was 58.9 MB in the beginning and 361.4 MB in the end (delta: -302.6 MB). Peak memory consumption was 64.8 MB. Max. memory is 16.1 GB. * Witness Printer took 7.45 ms. Allocated memory is still 463.5 MB. Free memory is still 361.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] unsigned int N_LIN=1; [L16] unsigned int N_COL=1; [L17] unsigned int j,k; [L18] int matriz[N_COL][N_LIN], maior; [L20] maior = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE j=maior [L27] EXPR matriz[j][k] [L27] maior = matriz[j][k] [L22] k++ [L22] COND FALSE !(k=maior [L27] EXPR matriz[j][k] [L27] maior = matriz[j][k] [L22] k++ [L22] COND FALSE !(k main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 -> ac6f32953cea7d4ed79f261aa32d63846572fa9f [2020-11-30 01:34:32,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:34:32,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:34:32,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:34:32,064 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:34:32,065 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:34:32,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/../../sv-benchmarks/c/loops/matrix-1.c [2020-11-30 01:34:32,147 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/7e09271d3/bacd4f3dcd8943c781c99016149a8441/FLAGced4eb864 [2020-11-30 01:34:32,705 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:34:32,706 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/sv-benchmarks/c/loops/matrix-1.c [2020-11-30 01:34:32,714 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/7e09271d3/bacd4f3dcd8943c781c99016149a8441/FLAGced4eb864 [2020-11-30 01:34:33,056 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/data/7e09271d3/bacd4f3dcd8943c781c99016149a8441 [2020-11-30 01:34:33,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:34:33,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:34:33,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:34:33,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:34:33,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:34:33,076 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a94cf9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33, skipping insertion in model container [2020-11-30 01:34:33,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:34:33,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:34:33,381 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:34:33,396 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:34:33,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:34:33,457 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:34:33,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33 WrapperNode [2020-11-30 01:34:33,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:34:33,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:34:33,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:34:33,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:34:33,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,486 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,517 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:34:33,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:34:33,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:34:33,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:34:33,535 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... [2020-11-30 01:34:33,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:34:33,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:34:33,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:34:33,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:34:33,604 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/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 01:34:33,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:34:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:34:33,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:34:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:34:33,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:34:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:34:33,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 01:34:34,237 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:34:34,238 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-30 01:34:34,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:34:34 BoogieIcfgContainer [2020-11-30 01:34:34,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:34:34,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:34:34,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:34:34,246 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:34:34,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:34:33" (1/3) ... [2020-11-30 01:34:34,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227dbd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:34:34, skipping insertion in model container [2020-11-30 01:34:34,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:34:33" (2/3) ... [2020-11-30 01:34:34,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@227dbd99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:34:34, skipping insertion in model container [2020-11-30 01:34:34,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:34:34" (3/3) ... [2020-11-30 01:34:34,249 INFO L111 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2020-11-30 01:34:34,262 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:34:34,274 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:34:34,288 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:34:34,334 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:34:34,335 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:34:34,335 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:34:34,335 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:34:34,335 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:34:34,336 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:34:34,336 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:34:34,336 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:34:34,354 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 01:34:34,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 01:34:34,360 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:34:34,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 01:34:34,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:34:34,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:34:34,369 INFO L82 PathProgramCache]: Analyzing trace with hash 889621918, now seen corresponding path program 1 times [2020-11-30 01:34:34,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:34:34,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424624278] [2020-11-30 01:34:34,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:34:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:34:34,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:34:34,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:34:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:34:34,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:34:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:34:34,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424624278] [2020-11-30 01:34:34,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:34:34,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 01:34:34,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536991058] [2020-11-30 01:34:34,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:34:34,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:34:34,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:34:34,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:34:34,644 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-11-30 01:34:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:34:34,773 INFO L93 Difference]: Finished difference Result 34 states and 49 transitions. [2020-11-30 01:34:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:34:34,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 01:34:34,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:34:34,789 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:34:34,789 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:34:34,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:34:34,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:34:34,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2020-11-30 01:34:34,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 01:34:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2020-11-30 01:34:34,834 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2020-11-30 01:34:34,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:34:34,835 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2020-11-30 01:34:34,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:34:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2020-11-30 01:34:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:34:34,836 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:34:34,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:34:35,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:34:35,052 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:34:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:34:35,056 INFO L82 PathProgramCache]: Analyzing trace with hash -235638193, now seen corresponding path program 1 times [2020-11-30 01:34:35,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:34:35,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395902491] [2020-11-30 01:34:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:34:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:34:35,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:34:35,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:34:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:34:35,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:34:35,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:34:35,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395902491] [2020-11-30 01:34:35,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:34:35,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:34:35,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521535703] [2020-11-30 01:34:35,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:34:35,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:34:35,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:34:35,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:34:35,252 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand 6 states. [2020-11-30 01:34:35,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:34:35,318 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-11-30 01:34:35,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:34:35,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-11-30 01:34:35,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:34:35,323 INFO L225 Difference]: With dead ends: 22 [2020-11-30 01:34:35,323 INFO L226 Difference]: Without dead ends: 13 [2020-11-30 01:34:35,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:34:35,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-30 01:34:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-11-30 01:34:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-30 01:34:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2020-11-30 01:34:35,333 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 9 [2020-11-30 01:34:35,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:34:35,333 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2020-11-30 01:34:35,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:34:35,333 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2020-11-30 01:34:35,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:34:35,334 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:34:35,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:34:35,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:34:35,535 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:34:35,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:34:35,535 INFO L82 PathProgramCache]: Analyzing trace with hash -589728809, now seen corresponding path program 1 times [2020-11-30 01:34:35,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:34:35,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149988526] [2020-11-30 01:34:35,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:34:35,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:34:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:34:35,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:34:35,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:34:35,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:34:35,920 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 01:34:35,921 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:34:35,921 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2020-11-30 01:34:35,927 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:34:35,948 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-30 01:34:36,005 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-30 01:34:36,013 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-30 01:34:36,013 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:1 [2020-11-30 01:34:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:34:36,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1149988526] [2020-11-30 01:34:36,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:34:36,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2020-11-30 01:34:36,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478333622] [2020-11-30 01:34:36,023 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 01:34:36,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:34:36,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 01:34:36,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:34:36,024 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 8 states. [2020-11-30 01:34:36,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:34:36,025 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2020-11-30 01:34:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:34:36,026 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-30 01:34:36,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:34:36,026 INFO L225 Difference]: With dead ends: 13 [2020-11-30 01:34:36,026 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 01:34:36,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:34:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 01:34:36,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 01:34:36,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 01:34:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 01:34:36,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-30 01:34:36,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:34:36,031 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 01:34:36,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 01:34:36,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 01:34:36,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 01:34:36,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:34:36,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 01:34:36,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 01:34:36,310 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 28) no Hoare annotation was computed. [2020-11-30 01:34:36,310 INFO L270 CegarLoopResult]: At program point L21-3(lines 21 28) the Hoare annotation is: false [2020-11-30 01:34:36,310 INFO L274 CegarLoopResult]: For program point L21-4(lines 21 28) no Hoare annotation was computed. [2020-11-30 01:34:36,310 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-30 01:34:36,310 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 01:34:36,310 INFO L277 CegarLoopResult]: At program point L32(lines 13 33) the Hoare annotation is: true [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point L26(lines 26 27) no Hoare annotation was computed. [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point L22-2(lines 22 28) no Hoare annotation was computed. [2020-11-30 01:34:36,311 INFO L270 CegarLoopResult]: At program point L22-3(lines 22 28) the Hoare annotation is: false [2020-11-30 01:34:36,311 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-11-30 01:34:36,312 INFO L277 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-30 01:34:36,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:34:36 BoogieIcfgContainer [2020-11-30 01:34:36,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:34:36,323 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:34:36,323 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:34:36,324 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:34:36,324 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:34:34" (3/4) ... [2020-11-30 01:34:36,328 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 01:34:36,339 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 01:34:36,340 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 01:34:36,340 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:34:36,341 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 01:34:36,402 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3784b087-1c10-4e6c-8d78-707aab687ce3/bin/uautomizer/witness.graphml [2020-11-30 01:34:36,410 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:34:36,413 INFO L168 Benchmark]: Toolchain (without parser) took 3347.52 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.8 MB in the beginning and 38.9 MB in the end (delta: -11.1 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:36,415 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 32.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:34:36,417 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.69 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 29.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:36,417 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.29 ms. Allocated memory is still 50.3 MB. Free memory was 29.4 MB in the beginning and 27.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:36,418 INFO L168 Benchmark]: Boogie Preprocessor took 82.02 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.8 MB in the beginning and 53.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:36,419 INFO L168 Benchmark]: RCFGBuilder took 637.69 ms. Allocated memory is still 69.2 MB. Free memory was 52.9 MB in the beginning and 39.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:36,420 INFO L168 Benchmark]: TraceAbstraction took 2080.32 ms. Allocated memory is still 69.2 MB. Free memory was 39.1 MB in the beginning and 41.6 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:34:36,420 INFO L168 Benchmark]: Witness Printer took 87.02 ms. Allocated memory is still 69.2 MB. Free memory was 41.6 MB in the beginning and 38.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:34:36,425 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 50.3 MB. Free memory was 32.6 MB in the beginning and 32.6 MB in the end (delta: 37.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 390.69 ms. Allocated memory is still 50.3 MB. Free memory was 27.6 MB in the beginning and 29.4 MB in the end (delta: -1.8 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.29 ms. Allocated memory is still 50.3 MB. Free memory was 29.4 MB in the beginning and 27.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 82.02 ms. Allocated memory was 50.3 MB in the beginning and 69.2 MB in the end (delta: 18.9 MB). Free memory was 27.8 MB in the beginning and 53.1 MB in the end (delta: -25.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 637.69 ms. Allocated memory is still 69.2 MB. Free memory was 52.9 MB in the beginning and 39.6 MB in the end (delta: 13.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2080.32 ms. Allocated memory is still 69.2 MB. Free memory was 39.1 MB in the beginning and 41.6 MB in the end (delta: -2.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 87.02 ms. Allocated memory is still 69.2 MB. Free memory was 41.6 MB in the beginning and 38.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 22 SDtfs, 42 SDslu, 22 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 6 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1819 SizeOfPredicates, 17 NumberOfNonLiveVariables, 125 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...