./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:14:37,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:14:37,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:14:37,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:14:37,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:14:37,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:14:37,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:14:37,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:14:37,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:14:37,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:14:37,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:14:37,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:14:37,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:14:37,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:14:37,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:14:37,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:14:37,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:14:37,202 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:14:37,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:14:37,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:14:37,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:14:37,207 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:14:37,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:14:37,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:14:37,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:14:37,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:14:37,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:14:37,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:14:37,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:14:37,212 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:14:37,212 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:14:37,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:14:37,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:14:37,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:14:37,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:14:37,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:14:37,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:14:37,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:14:37,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:14:37,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:14:37,217 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:14:37,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-12-07 18:14:37,230 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:14:37,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:14:37,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:14:37,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:14:37,232 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:14:37,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:14:37,232 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:14:37,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:14:37,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:14:37,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:14:37,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:14:37,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:14:37,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:14:37,233 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:14:37,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:14:37,234 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:14:37,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:14:37,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:14:37,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:14:37,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:14:37,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:14:37,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:14:37,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:14:37,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:14:37,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:14:37,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:14:37,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:14:37,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:14:37,236 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:14:37,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_27a26c0c-3145-4597-93e8-f9c1358d5584/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(__VERIFIER_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 -> 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 [2019-12-07 18:14:37,338 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:14:37,346 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:14:37,348 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:14:37,349 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:14:37,350 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:14:37,350 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-12-07 18:14:37,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/e7fcd837d/93f370da59c7425892a888e047ba4e9a/FLAG288024f71 [2019-12-07 18:14:37,820 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:14:37,820 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-12-07 18:14:37,829 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/e7fcd837d/93f370da59c7425892a888e047ba4e9a/FLAG288024f71 [2019-12-07 18:14:37,838 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/e7fcd837d/93f370da59c7425892a888e047ba4e9a [2019-12-07 18:14:37,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:14:37,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:14:37,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:14:37,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:14:37,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:14:37,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:14:37" (1/1) ... [2019-12-07 18:14:37,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1145ce58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:37, skipping insertion in model container [2019-12-07 18:14:37,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:14:37" (1/1) ... [2019-12-07 18:14:37,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:14:37,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:14:38,101 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:14:38,107 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:14:38,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:14:38,171 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:14:38,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38 WrapperNode [2019-12-07 18:14:38,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:14:38,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:14:38,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:14:38,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:14:38,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:14:38,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:14:38,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:14:38,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:14:38,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,213 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... [2019-12-07 18:14:38,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:14:38,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:14:38,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:14:38,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:14:38,224 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:14:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:14:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 18:14:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 18:14:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 18:14:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:14:38,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:14:38,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:14:38,448 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:14:38,448 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 18:14:38,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:14:38 BoogieIcfgContainer [2019-12-07 18:14:38,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:14:38,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:14:38,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:14:38,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:14:38,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:14:37" (1/3) ... [2019-12-07 18:14:38,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c0f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:14:38, skipping insertion in model container [2019-12-07 18:14:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:38" (2/3) ... [2019-12-07 18:14:38,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3c0f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:14:38, skipping insertion in model container [2019-12-07 18:14:38,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:14:38" (3/3) ... [2019-12-07 18:14:38,453 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-12-07 18:14:38,460 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:14:38,464 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:14:38,471 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:14:38,486 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:14:38,486 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:14:38,486 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:14:38,486 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:14:38,486 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:14:38,486 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:14:38,486 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:14:38,487 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:14:38,495 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 18:14:38,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:14:38,499 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:38,500 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:38,500 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:38,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:38,504 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-12-07 18:14:38,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:14:38,509 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800387915] [2019-12-07 18:14:38,509 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:14:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:38,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:38,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800387915] [2019-12-07 18:14:38,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:14:38,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:14:38,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30155166] [2019-12-07 18:14:38,625 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:14:38,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:14:38,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:14:38,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:14:38,635 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-12-07 18:14:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:38,658 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-12-07 18:14:38,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:14:38,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 18:14:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:38,666 INFO L225 Difference]: With dead ends: 43 [2019-12-07 18:14:38,666 INFO L226 Difference]: Without dead ends: 21 [2019-12-07 18:14:38,668 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:14:38,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-12-07 18:14:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-12-07 18:14:38,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-12-07 18:14:38,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-12-07 18:14:38,690 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2019-12-07 18:14:38,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:38,690 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-12-07 18:14:38,690 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:14:38,690 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-12-07 18:14:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 18:14:38,691 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:38,691 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:38,691 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:38,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:38,691 INFO L82 PathProgramCache]: Analyzing trace with hash -60440637, now seen corresponding path program 1 times [2019-12-07 18:14:38,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:14:38,691 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418501031] [2019-12-07 18:14:38,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:14:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:38,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418501031] [2019-12-07 18:14:38,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289783227] [2019-12-07 18:14:38,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:38,785 INFO L264 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 18:14:38,789 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:38,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:14:38,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-12-07 18:14:38,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990265809] [2019-12-07 18:14:38,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:14:38,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:14:38,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:14:38,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:14:38,809 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-12-07 18:14:38,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:38,828 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-12-07 18:14:38,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:14:38,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-12-07 18:14:38,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:38,829 INFO L225 Difference]: With dead ends: 35 [2019-12-07 18:14:38,829 INFO L226 Difference]: Without dead ends: 24 [2019-12-07 18:14:38,830 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:14:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-12-07 18:14:38,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-12-07 18:14:38,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 18:14:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 18:14:38,833 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2019-12-07 18:14:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:38,833 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 18:14:38,833 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:14:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 18:14:38,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:14:38,833 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:38,834 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:39,035 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:14:39,035 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:39,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:39,036 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 2 times [2019-12-07 18:14:39,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:14:39,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708957258] [2019-12-07 18:14:39,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:14:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:39,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708957258] [2019-12-07 18:14:39,168 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628470761] [2019-12-07 18:14:39,168 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:39,219 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:14:39,219 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:14:39,220 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:14:39,221 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:39,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:14:39,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-12-07 18:14:39,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341468336] [2019-12-07 18:14:39,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:14:39,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:14:39,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:14:39,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:14:39,234 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-12-07 18:14:39,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:39,254 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-12-07 18:14:39,255 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:14:39,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-12-07 18:14:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:39,255 INFO L225 Difference]: With dead ends: 38 [2019-12-07 18:14:39,255 INFO L226 Difference]: Without dead ends: 27 [2019-12-07 18:14:39,256 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:14:39,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-12-07 18:14:39,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-12-07 18:14:39,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-12-07 18:14:39,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-12-07 18:14:39,259 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-12-07 18:14:39,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:39,260 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-12-07 18:14:39,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:14:39,260 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-12-07 18:14:39,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:14:39,261 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:39,261 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:39,461 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:14:39,462 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:39,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:39,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1626262435, now seen corresponding path program 3 times [2019-12-07 18:14:39,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:14:39,464 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162201897] [2019-12-07 18:14:39,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:14:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:39,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162201897] [2019-12-07 18:14:39,608 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888827666] [2019-12-07 18:14:39,608 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:39,675 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 18:14:39,675 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:14:39,677 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 18:14:39,679 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:39,755 INFO L377 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 13 treesize of output 9 [2019-12-07 18:14:39,756 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:39,767 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:39,767 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:39,768 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-12-07 18:14:39,795 INFO L377 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 23 treesize of output 11 [2019-12-07 18:14:39,796 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:39,801 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:39,801 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:39,802 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-12-07 18:14:39,835 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 18:14:39,835 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:39,838 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:39,839 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:39,839 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-12-07 18:14:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 18:14:39,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:14:39,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-12-07 18:14:39,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988251890] [2019-12-07 18:14:39,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:14:39,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:14:39,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:14:39,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:14:39,856 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 12 states. [2019-12-07 18:14:40,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:40,121 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-12-07 18:14:40,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-12-07 18:14:40,121 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-12-07 18:14:40,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:40,122 INFO L225 Difference]: With dead ends: 41 [2019-12-07 18:14:40,122 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 18:14:40,122 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2019-12-07 18:14:40,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 18:14:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 18:14:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:14:40,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-12-07 18:14:40,128 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2019-12-07 18:14:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:40,128 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-12-07 18:14:40,128 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:14:40,129 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-12-07 18:14:40,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 18:14:40,129 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:40,129 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:40,330 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:14:40,330 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:40,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:40,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-12-07 18:14:40,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:14:40,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039491253] [2019-12-07 18:14:40,333 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:14:40,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:40,849 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-12-07 18:14:40,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039491253] [2019-12-07 18:14:40,849 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [541426105] [2019-12-07 18:14:40,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:40,892 INFO L264 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 57 conjunts are in the unsatisfiable core [2019-12-07 18:14:40,894 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:40,935 INFO L377 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 13 treesize of output 9 [2019-12-07 18:14:40,935 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:40,941 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:40,941 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:40,941 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-12-07 18:14:40,991 INFO L430 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_12|, |v_#memory_$Pointer$.offset_12|], 2=[|v_#memory_int_19|, |v_#memory_int_18|]} [2019-12-07 18:14:40,998 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:40,999 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-12-07 18:14:41,000 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,018 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,022 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:41,023 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-12-07 18:14:41,023 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,037 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,042 INFO L377 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 23 treesize of output 11 [2019-12-07 18:14:41,043 INFO L534 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,054 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,057 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 18:14:41,065 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,065 INFO L377 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 21 treesize of output 36 [2019-12-07 18:14:41,065 INFO L534 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,086 INFO L614 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2019-12-07 18:14:41,087 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,087 INFO L239 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:89, output treesize:37 [2019-12-07 18:14:41,128 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,128 INFO L377 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 23 treesize of output 38 [2019-12-07 18:14:41,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:41,130 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:41,131 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:41,176 INFO L614 ElimStorePlain]: treesize reduction 12, result has 85.7 percent of original size [2019-12-07 18:14:41,189 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,189 INFO L377 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 19 treesize of output 34 [2019-12-07 18:14:41,190 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,228 INFO L614 ElimStorePlain]: treesize reduction 16, result has 81.0 percent of original size [2019-12-07 18:14:41,235 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,236 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-12-07 18:14:41,236 INFO L534 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:41,260 INFO L614 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2019-12-07 18:14:41,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:41,262 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:41,262 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:69, output treesize:53 [2019-12-07 18:14:41,262 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:41,299 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:41,368 INFO L430 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_$Pointer$.base_14|, |v_#memory_$Pointer$.offset_14|, |v_#memory_int_21|]} [2019-12-07 18:14:41,372 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:41,392 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,395 INFO L534 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:41,411 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,418 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:41,418 INFO L377 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 31 treesize of output 33 [2019-12-07 18:14:41,419 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:41,422 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:41,422 INFO L172 IndexEqualityManager]: detected equality via solver [2019-12-07 18:14:41,423 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-12-07 18:14:41,426 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@273ad027 [2019-12-07 18:14:41,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:14:41,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2019-12-07 18:14:41,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332095823] [2019-12-07 18:14:41,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:14:41,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:14:41,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:14:41,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2019-12-07 18:14:41,427 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 12 states. [2019-12-07 18:14:41,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:14:41,628 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:14:41,629 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@273ad027 at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.lock(ManagedScript.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.assertCodeBlock(IncrementalHoareTripleChecker.java:354) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.prepareAssertionStackAndAddTransition(IncrementalHoareTripleChecker.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.IncrementalHoareTripleChecker.checkInternal(IncrementalHoareTripleChecker.java:127) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.ProtectiveHoareTripleChecker.checkInternal(ProtectiveHoareTripleChecker.java:60) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.EfficientHoareTripleChecker.checkInternal(EfficientHoareTripleChecker.java:62) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.hoaretriple.CachingHoareTripleChecker.checkInternal(CachingHoareTripleChecker.java:96) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton$InternalSuccessorComputationHelper.computeSuccWithSolver(AbstractInterpolantAutomaton.java:359) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.addOtherSuccessors(DeterministicInterpolantAutomaton.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:698) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:627) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:139) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:126) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-12-07 18:14:41,637 INFO L168 Benchmark]: Toolchain (without parser) took 3794.94 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 940.9 MB in the beginning and 928.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 119.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:41,638 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:14:41,640 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:41,641 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:41,642 INFO L168 Benchmark]: Boogie Preprocessor took 19.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:14:41,643 INFO L168 Benchmark]: RCFGBuilder took 225.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:41,644 INFO L168 Benchmark]: TraceAbstraction took 3185.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 928.0 MB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:41,651 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 330.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 107.0 MB). Free memory was 940.9 MB in the beginning and 1.1 GB in the end (delta: -144.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.42 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 225.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3185.02 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 928.0 MB in the end (delta: 129.1 MB). Peak memory consumption was 129.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@273ad027 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@273ad027: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.managedscript.ManagedScript.lock(ManagedScript.java:83) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 18:14:43,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:14:43,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:14:43,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:14:43,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:14:43,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:14:43,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:14:43,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:14:43,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:14:43,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:14:43,058 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:14:43,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:14:43,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:14:43,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:14:43,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:14:43,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:14:43,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:14:43,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:14:43,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:14:43,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:14:43,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:14:43,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:14:43,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:14:43,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:14:43,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:14:43,072 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:14:43,072 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:14:43,073 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:14:43,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:14:43,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:14:43,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:14:43,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:14:43,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:14:43,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:14:43,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:14:43,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:14:43,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:14:43,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:14:43,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:14:43,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:14:43,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:14:43,078 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-12-07 18:14:43,090 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:14:43,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:14:43,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:14:43,091 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:14:43,091 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:14:43,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:14:43,092 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:14:43,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:14:43,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:14:43,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 18:14:43,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:14:43,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 18:14:43,093 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 18:14:43,093 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 18:14:43,093 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:14:43,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:14:43,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:14:43,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 18:14:43,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:14:43,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:14:43,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:14:43,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:14:43,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:14:43,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:14:43,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:14:43,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 18:14:43,096 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-12-07 18:14:43,096 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 18:14:43,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 18:14:43,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:14:43,096 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 18:14:43,096 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_27a26c0c-3145-4597-93e8-f9c1358d5584/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(__VERIFIER_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 -> 15c2a0dbf98e8d278e41c47d311b6d4dc752a8f7 [2019-12-07 18:14:43,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:14:43,290 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:14:43,292 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:14:43,293 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:14:43,294 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:14:43,294 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-12-07 18:14:43,334 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/d35401882/911f0160ec3240bb96c2227e77dbbab4/FLAG3a044f1c9 [2019-12-07 18:14:43,761 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:14:43,762 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/sv-benchmarks/c/list-ext3-properties/sll_circular_traversal-1.i [2019-12-07 18:14:43,770 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/d35401882/911f0160ec3240bb96c2227e77dbbab4/FLAG3a044f1c9 [2019-12-07 18:14:44,112 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/data/d35401882/911f0160ec3240bb96c2227e77dbbab4 [2019-12-07 18:14:44,114 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:14:44,115 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:14:44,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:14:44,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:14:44,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:14:44,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21518952 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44, skipping insertion in model container [2019-12-07 18:14:44,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:14:44,148 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:14:44,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:14:44,361 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:14:44,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:14:44,425 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:14:44,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44 WrapperNode [2019-12-07 18:14:44,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:14:44,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:14:44,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:14:44,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:14:44,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:14:44,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:14:44,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:14:44,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:14:44,464 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... [2019-12-07 18:14:44,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:14:44,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:14:44,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:14:44,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:14:44,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-12-07 18:14:44,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:14:44,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:14:44,754 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:14:44,754 INFO L287 CfgBuilder]: Removed 13 assume(true) statements. [2019-12-07 18:14:44,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:14:44 BoogieIcfgContainer [2019-12-07 18:14:44,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:14:44,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:14:44,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:14:44,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:14:44,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:14:44" (1/3) ... [2019-12-07 18:14:44,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3f92e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:14:44, skipping insertion in model container [2019-12-07 18:14:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:14:44" (2/3) ... [2019-12-07 18:14:44,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d3f92e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:14:44, skipping insertion in model container [2019-12-07 18:14:44,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:14:44" (3/3) ... [2019-12-07 18:14:44,761 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-12-07 18:14:44,768 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:14:44,773 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 18:14:44,780 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 18:14:44,794 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:14:44,794 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 18:14:44,794 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:14:44,794 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:14:44,794 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:14:44,794 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:14:44,795 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:14:44,795 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:14:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-12-07 18:14:44,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 18:14:44,807 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:44,808 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:44,808 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:44,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:44,812 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-12-07 18:14:44,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:14:44,819 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [872990467] [2019-12-07 18:14:44,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:44,882 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 18:14:44,885 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:44,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:44,908 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:14:44,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:44,923 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [872990467] [2019-12-07 18:14:44,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:14:44,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-12-07 18:14:44,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377199331] [2019-12-07 18:14:44,929 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:14:44,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:14:44,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:14:44,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:14:44,941 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 4 states. [2019-12-07 18:14:45,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:45,004 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-12-07 18:14:45,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:14:45,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 18:14:45,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:45,012 INFO L225 Difference]: With dead ends: 44 [2019-12-07 18:14:45,012 INFO L226 Difference]: Without dead ends: 22 [2019-12-07 18:14:45,014 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:14:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-12-07 18:14:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-12-07 18:14:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-12-07 18:14:45,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-12-07 18:14:45,037 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2019-12-07 18:14:45,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:45,037 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-12-07 18:14:45,037 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:14:45,037 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-12-07 18:14:45,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 18:14:45,037 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:45,038 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:45,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 18:14:45,239 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:45,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:45,240 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 1 times [2019-12-07 18:14:45,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:14:45,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973064322] [2019-12-07 18:14:45,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:45,363 INFO L264 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 18:14:45,365 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:45,382 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:14:45,421 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:14:45,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973064322] [2019-12-07 18:14:45,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:14:45,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-12-07 18:14:45,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364199860] [2019-12-07 18:14:45,424 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:14:45,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:14:45,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:14:45,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:14:45,425 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-12-07 18:14:45,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:45,538 INFO L93 Difference]: Finished difference Result 39 states and 46 transitions. [2019-12-07 18:14:45,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:14:45,538 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-12-07 18:14:45,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:45,539 INFO L225 Difference]: With dead ends: 39 [2019-12-07 18:14:45,539 INFO L226 Difference]: Without dead ends: 28 [2019-12-07 18:14:45,540 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:14:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-12-07 18:14:45,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2019-12-07 18:14:45,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-12-07 18:14:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2019-12-07 18:14:45,544 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16 [2019-12-07 18:14:45,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:45,544 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2019-12-07 18:14:45,544 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:14:45,544 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2019-12-07 18:14:45,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:14:45,545 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:45,545 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:45,745 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 18:14:45,746 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:45,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:45,747 INFO L82 PathProgramCache]: Analyzing trace with hash -2045871112, now seen corresponding path program 2 times [2019-12-07 18:14:45,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:14:45,749 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [57205762] [2019-12-07 18:14:45,750 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:45,895 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:14:45,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:14:45,907 INFO L264 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 19 conjunts are in the unsatisfiable core [2019-12-07 18:14:45,909 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:45,965 INFO L377 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 13 treesize of output 9 [2019-12-07 18:14:45,966 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:45,978 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:45,979 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:45,979 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-12-07 18:14:46,006 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:46,007 INFO L377 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 25 treesize of output 13 [2019-12-07 18:14:46,008 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:46,016 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:46,016 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:46,016 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:16 [2019-12-07 18:14:46,054 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-12-07 18:14:46,055 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:46,059 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:46,059 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:46,060 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-12-07 18:14:46,074 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 18:14:46,075 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 18:14:46,142 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:46,146 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:46,147 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:46,147 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:17 [2019-12-07 18:14:46,194 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:46,222 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:46,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 18:14:46,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:46,225 INFO L534 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2019-12-07 18:14:46,225 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:37, output treesize:26 [2019-12-07 18:14:46,302 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-12-07 18:14:46,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [57205762] [2019-12-07 18:14:46,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:14:46,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2019-12-07 18:14:46,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974204186] [2019-12-07 18:14:46,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 18:14:46,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-12-07 18:14:46,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:14:46,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:14:46,305 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 14 states. [2019-12-07 18:14:46,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:14:46,681 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2019-12-07 18:14:46,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:14:46,681 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2019-12-07 18:14:46,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:14:46,682 INFO L225 Difference]: With dead ends: 32 [2019-12-07 18:14:46,682 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 18:14:46,682 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2019-12-07 18:14:46,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 18:14:46,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 18:14:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:14:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-12-07 18:14:46,687 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2019-12-07 18:14:46,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:14:46,687 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-12-07 18:14:46,688 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 18:14:46,688 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-12-07 18:14:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-12-07 18:14:46,688 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:14:46,688 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:14:46,889 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 18:14:46,890 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 18:14:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:14:46,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-12-07 18:14:46,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-12-07 18:14:46,892 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899283571] [2019-12-07 18:14:46,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 18:14:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:47,135 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 44 conjunts are in the unsatisfiable core [2019-12-07 18:14:47,138 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:14:47,143 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2019-12-07 18:14:47,143 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,149 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,150 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,150 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 18:14:47,179 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,179 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-12-07 18:14:47,181 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,205 INFO L614 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2019-12-07 18:14:47,205 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:47,206 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:21 [2019-12-07 18:14:47,261 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,262 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 71 [2019-12-07 18:14:47,263 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,311 INFO L614 ElimStorePlain]: treesize reduction 28, result has 54.8 percent of original size [2019-12-07 18:14:47,312 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:47,312 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:34, output treesize:34 [2019-12-07 18:14:47,402 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,403 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 103 [2019-12-07 18:14:47,404 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,501 INFO L614 ElimStorePlain]: treesize reduction 42, result has 56.3 percent of original size [2019-12-07 18:14:47,502 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:47,502 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:52, output treesize:54 [2019-12-07 18:14:47,558 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:14:47,559 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,602 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,603 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:47,603 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:73, output treesize:69 [2019-12-07 18:14:47,696 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,697 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 54 [2019-12-07 18:14:47,698 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,754 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,755 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,755 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:77, output treesize:34 [2019-12-07 18:14:47,802 INFO L430 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_24|, |v_#memory_$Pointer$.base_24|], 2=[|v_#memory_int_30|, |v_#memory_int_31|]} [2019-12-07 18:14:47,818 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:47,820 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-12-07 18:14:47,820 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,910 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,930 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:47,931 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-12-07 18:14:47,931 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:47,991 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:47,995 INFO L534 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:48,037 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,044 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:48,045 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 27 [2019-12-07 18:14:48,046 INFO L534 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,076 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,077 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,077 INFO L239 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:98, output treesize:54 [2019-12-07 18:14:48,129 INFO L430 ElimStorePlain]: Different costs {2=[|v_#memory_$Pointer$.offset_25|, |v_#memory_$Pointer$.base_25|], 4=[|v_#memory_int_32|]} [2019-12-07 18:14:48,138 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-12-07 18:14:48,139 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,189 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,193 INFO L377 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 39 treesize of output 30 [2019-12-07 18:14:48,194 INFO L534 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,248 INFO L614 ElimStorePlain]: treesize reduction 4, result has 95.0 percent of original size [2019-12-07 18:14:48,258 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:48,259 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2019-12-07 18:14:48,260 INFO L534 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,280 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,280 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:48,281 INFO L239 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:88, output treesize:61 [2019-12-07 18:14:48,387 INFO L430 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 1=[|v_#memory_$Pointer$.offset_26|, |v_#memory_$Pointer$.base_26|], 3=[|v_#memory_int_33|]} [2019-12-07 18:14:48,391 INFO L534 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:48,444 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,449 INFO L534 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 18:14:48,477 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,487 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-12-07 18:14:48,488 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 19 [2019-12-07 18:14:48,502 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-12-07 18:14:48,502 INFO L534 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,504 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,504 INFO L534 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:14:48,527 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,534 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:14:48,534 INFO L377 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 88 treesize of output 69 [2019-12-07 18:14:48,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 18:14:48,537 INFO L430 ElimStorePlain]: Different costs {0=[v_arrayElimCell_25], 1=[v_arrayElimCell_26]} [2019-12-07 18:14:48,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899283571] [2019-12-07 18:14:48,540 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@79cf178a [2019-12-07 18:14:48,540 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1878362316] [2019-12-07 18:14:48,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-12-07 18:14:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:48,718 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 18:14:48,719 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@79cf178a [2019-12-07 18:14:48,719 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513034200] [2019-12-07 18:14:48,719 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_27a26c0c-3145-4597-93e8-f9c1358d5584/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 [2019-12-07 18:14:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:14:48,791 INFO L264 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 36 conjunts are in the unsatisfiable core [2019-12-07 18:14:48,792 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.IncrementalPlicationChecker@79cf178a [2019-12-07 18:14:48,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:14:48,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2019-12-07 18:14:48,792 ERROR L206 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2019-12-07 18:14:48,792 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:14:49,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:14:49,417 WARN L229 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2019-12-07 18:14:49,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:14:49 BoogieIcfgContainer [2019-12-07 18:14:49,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:14:49,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:14:49,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:14:49,418 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:14:49,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:14:44" (3/4) ... [2019-12-07 18:14:49,421 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:14:49,421 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:14:49,422 INFO L168 Benchmark]: Toolchain (without parser) took 5307.19 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.1 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -139.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:49,422 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:14:49,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:49,423 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:49,423 INFO L168 Benchmark]: Boogie Preprocessor took 23.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:14:49,424 INFO L168 Benchmark]: RCFGBuilder took 274.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:49,424 INFO L168 Benchmark]: TraceAbstraction took 4661.13 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -19.3 MB). Peak memory consumption was 58.8 MB. Max. memory is 11.5 GB. [2019-12-07 18:14:49,424 INFO L168 Benchmark]: Witness Printer took 3.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:14:49,426 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 310.90 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 118.0 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -151.7 MB). Peak memory consumption was 26.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.58 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.03 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 274.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4661.13 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 78.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -19.3 MB). Peak memory consumption was 58.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.33 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 609]: 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: [L585] const int len = 5; [L586] const int data_init = 1; [L564] SLL const last = (SLL) malloc(sizeof(struct node)); [L565] COND FALSE !(((void *)0) == last) [L568] last->next = last [L569] last->data = data [L570] SLL head = last; [L571] COND TRUE len > 1 [L572] SLL new_head = (SLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) [L576] new_head->next = head [L577] new_head->data = data [L578] head = new_head [L579] len-- [L571] COND TRUE len > 1 [L572] SLL new_head = (SLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) [L576] new_head->next = head [L577] new_head->data = data [L578] head = new_head [L579] len-- [L571] COND TRUE len > 1 [L572] SLL new_head = (SLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) [L576] new_head->next = head [L577] new_head->data = data [L578] head = new_head [L579] len-- [L571] COND TRUE len > 1 [L572] SLL new_head = (SLL) malloc(sizeof(struct node)); [L573] COND FALSE !(((void *)0) == new_head) [L576] new_head->next = head [L577] new_head->data = data [L578] head = new_head [L579] len-- [L571] COND FALSE !(len > 1) [L581] last->next = head [L582] return head; [L587] SLL const head = sll_circular_create(len, data_init); [L588] int data_new = 1; [L589] SLL ptr = head; [L591] EXPR ptr->data [L591] COND FALSE !(data_init != ptr->data) [L594] ptr->data = data_new [L595] EXPR ptr->next [L595] ptr = ptr->next [L596] data_new++ [L597] COND TRUE ptr != head [L591] EXPR ptr->data [L591] COND TRUE data_init != ptr->data [L609] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Result: UNKNOWN, OverallTime: 4.6s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 75 SDslu, 163 SDs, 0 SdLazy, 109 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 2 QuantifiedInterpolants, 10656 SizeOfPredicates, 25 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 30/54 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...