./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i -s /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/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 f18f7f1f917468e24f0e5d26966f1156107884dd .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 09:03:52,363 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 09:03:52,364 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 09:03:52,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 09:03:52,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 09:03:52,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 09:03:52,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 09:03:52,372 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 09:03:52,373 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 09:03:52,374 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 09:03:52,374 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 09:03:52,374 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 09:03:52,375 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 09:03:52,376 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 09:03:52,376 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 09:03:52,377 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 09:03:52,377 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 09:03:52,378 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 09:03:52,379 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 09:03:52,380 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 09:03:52,380 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 09:03:52,381 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 09:03:52,382 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 09:03:52,382 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 09:03:52,382 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 09:03:52,383 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 09:03:52,383 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 09:03:52,384 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 09:03:52,384 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 09:03:52,385 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 09:03:52,385 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 09:03:52,385 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 09:03:52,385 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 09:03:52,385 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 09:03:52,386 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 09:03:52,386 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 09:03:52,387 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 09:03:52,393 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 09:03:52,394 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 09:03:52,394 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 09:03:52,394 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 09:03:52,395 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 09:03:52,395 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 09:03:52,395 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 09:03:52,395 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 09:03:52,395 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 09:03:52,395 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 09:03:52,395 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 09:03:52,396 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 09:03:52,397 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 09:03:52,397 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 09:03:52,397 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 09:03:52,397 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 09:03:52,397 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 09:03:52,397 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 09:03:52,397 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 09:03:52,398 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 09:03:52,398 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 09:03:52,398 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 09:03:52,398 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 09:03:52,398 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/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 -> f18f7f1f917468e24f0e5d26966f1156107884dd [2018-12-09 09:03:52,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 09:03:52,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 09:03:52,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 09:03:52,425 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 09:03:52,425 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 09:03:52,425 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/../../sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i [2018-12-09 09:03:52,458 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/data/c0f04aa35/ad0cae63704f40c0be8d7998c7d7952b/FLAGbb5b96e1b [2018-12-09 09:03:52,892 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 09:03:52,892 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/sv-benchmarks/c/ldv-regression/rule60_list2_true-termination.c_false-unreach-call_1.i [2018-12-09 09:03:52,897 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/data/c0f04aa35/ad0cae63704f40c0be8d7998c7d7952b/FLAGbb5b96e1b [2018-12-09 09:03:52,905 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/data/c0f04aa35/ad0cae63704f40c0be8d7998c7d7952b [2018-12-09 09:03:52,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 09:03:52,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 09:03:52,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 09:03:52,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 09:03:52,910 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 09:03:52,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:03:52" (1/1) ... [2018-12-09 09:03:52,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@761adb7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:52, skipping insertion in model container [2018-12-09 09:03:52,912 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:03:52" (1/1) ... [2018-12-09 09:03:52,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 09:03:52,934 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 09:03:53,076 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:03:53,079 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 09:03:53,136 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 09:03:53,174 INFO L195 MainTranslator]: Completed translation [2018-12-09 09:03:53,174 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53 WrapperNode [2018-12-09 09:03:53,174 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 09:03:53,175 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 09:03:53,175 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 09:03:53,175 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 09:03:53,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,191 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 09:03:53,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 09:03:53,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 09:03:53,196 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 09:03:53,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,202 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... [2018-12-09 09:03:53,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 09:03:53,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 09:03:53,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 09:03:53,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 09:03:53,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/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 [2018-12-09 09:03:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 09:03:53,250 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2018-12-09 09:03:53,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2018-12-09 09:03:53,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 09:03:53,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 09:03:53,410 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 09:03:53,411 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-12-09 09:03:53,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:03:53 BoogieIcfgContainer [2018-12-09 09:03:53,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 09:03:53,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 09:03:53,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 09:03:53,414 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 09:03:53,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:03:52" (1/3) ... [2018-12-09 09:03:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1481a897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:03:53, skipping insertion in model container [2018-12-09 09:03:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:03:53" (2/3) ... [2018-12-09 09:03:53,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1481a897 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:03:53, skipping insertion in model container [2018-12-09 09:03:53,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:03:53" (3/3) ... [2018-12-09 09:03:53,416 INFO L112 eAbstractionObserver]: Analyzing ICFG rule60_list2_true-termination.c_false-unreach-call_1.i [2018-12-09 09:03:53,424 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 09:03:53,430 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 09:03:53,440 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 09:03:53,457 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 09:03:53,458 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 09:03:53,458 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 09:03:53,458 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 09:03:53,458 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 09:03:53,458 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 09:03:53,458 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 09:03:53,458 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 09:03:53,458 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 09:03:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2018-12-09 09:03:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-12-09 09:03:53,471 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:53,472 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:53,473 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:53,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:53,478 INFO L82 PathProgramCache]: Analyzing trace with hash -695557442, now seen corresponding path program 1 times [2018-12-09 09:03:53,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:53,480 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:53,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:53,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:53,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:03:53,615 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:03:53,615 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-12-09 09:03:53,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-12-09 09:03:53,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-12-09 09:03:53,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-12-09 09:03:53,627 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 6 states. [2018-12-09 09:03:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:53,678 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2018-12-09 09:03:53,679 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-12-09 09:03:53,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-12-09 09:03:53,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:53,685 INFO L225 Difference]: With dead ends: 86 [2018-12-09 09:03:53,685 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 09:03:53,687 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-12-09 09:03:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 09:03:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 09:03:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 09:03:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2018-12-09 09:03:53,711 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 13 [2018-12-09 09:03:53,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:53,711 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2018-12-09 09:03:53,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-12-09 09:03:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2018-12-09 09:03:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 09:03:53,713 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:53,713 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:53,713 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:53,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:53,713 INFO L82 PathProgramCache]: Analyzing trace with hash -314025953, now seen corresponding path program 1 times [2018-12-09 09:03:53,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:53,714 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:53,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:53,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:53,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 09:03:53,787 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 09:03:53,787 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-12-09 09:03:53,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-12-09 09:03:53,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-12-09 09:03:53,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 09:03:53,789 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2018-12-09 09:03:53,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:53,807 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2018-12-09 09:03:53,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-12-09 09:03:53,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2018-12-09 09:03:53,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:53,809 INFO L225 Difference]: With dead ends: 65 [2018-12-09 09:03:53,809 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 09:03:53,810 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-12-09 09:03:53,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 09:03:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-09 09:03:53,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 09:03:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2018-12-09 09:03:53,815 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 38 [2018-12-09 09:03:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:53,816 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2018-12-09 09:03:53,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-12-09 09:03:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2018-12-09 09:03:53,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-12-09 09:03:53,816 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:53,816 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:53,816 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:53,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:53,817 INFO L82 PathProgramCache]: Analyzing trace with hash -607428960, now seen corresponding path program 1 times [2018-12-09 09:03:53,817 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:53,817 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:53,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:53,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:53,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:53,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 09:03:53,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:03:53,887 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:03:53,896 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:53,938 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:03:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 09:03:54,140 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-12-09 09:03:54,140 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-12-09 09:03:54,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-12-09 09:03:54,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-12-09 09:03:54,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2018-12-09 09:03:54,141 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 18 states. [2018-12-09 09:03:54,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:54,652 INFO L93 Difference]: Finished difference Result 97 states and 117 transitions. [2018-12-09 09:03:54,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-12-09 09:03:54,652 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2018-12-09 09:03:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:54,654 INFO L225 Difference]: With dead ends: 97 [2018-12-09 09:03:54,654 INFO L226 Difference]: Without dead ends: 70 [2018-12-09 09:03:54,654 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=203, Invalid=987, Unknown=0, NotChecked=0, Total=1190 [2018-12-09 09:03:54,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-12-09 09:03:54,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2018-12-09 09:03:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-12-09 09:03:54,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2018-12-09 09:03:54,661 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 38 [2018-12-09 09:03:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:54,661 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2018-12-09 09:03:54,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-12-09 09:03:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2018-12-09 09:03:54,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 09:03:54,662 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:54,662 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:54,662 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:54,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:54,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1122798515, now seen corresponding path program 1 times [2018-12-09 09:03:54,662 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:54,663 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:54,663 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:54,663 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:54,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:03:54,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:03:54,837 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:03:54,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:54,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:54,869 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:03:54,991 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:03:55,005 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:03:55,005 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 24 [2018-12-09 09:03:55,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-12-09 09:03:55,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-12-09 09:03:55,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2018-12-09 09:03:55,006 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand 24 states. [2018-12-09 09:03:55,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:55,386 INFO L93 Difference]: Finished difference Result 73 states and 87 transitions. [2018-12-09 09:03:55,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-12-09 09:03:55,387 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 45 [2018-12-09 09:03:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:55,387 INFO L225 Difference]: With dead ends: 73 [2018-12-09 09:03:55,388 INFO L226 Difference]: Without dead ends: 69 [2018-12-09 09:03:55,388 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2018-12-09 09:03:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-12-09 09:03:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2018-12-09 09:03:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-12-09 09:03:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 79 transitions. [2018-12-09 09:03:55,394 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 79 transitions. Word has length 45 [2018-12-09 09:03:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:55,394 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 79 transitions. [2018-12-09 09:03:55,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-12-09 09:03:55,394 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 79 transitions. [2018-12-09 09:03:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-12-09 09:03:55,395 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:55,395 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:55,395 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:55,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:55,395 INFO L82 PathProgramCache]: Analyzing trace with hash 313451889, now seen corresponding path program 1 times [2018-12-09 09:03:55,395 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:55,396 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:55,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:55,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:55,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:55,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:55,512 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:03:55,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:03:55,512 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:03:55,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:55,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:03:55,686 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 09:03:55,702 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:03:55,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2018-12-09 09:03:55,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-09 09:03:55,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-09 09:03:55,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=565, Unknown=0, NotChecked=0, Total=650 [2018-12-09 09:03:55,703 INFO L87 Difference]: Start difference. First operand 68 states and 79 transitions. Second operand 26 states. [2018-12-09 09:03:56,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:56,369 INFO L93 Difference]: Finished difference Result 99 states and 113 transitions. [2018-12-09 09:03:56,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-12-09 09:03:56,369 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 45 [2018-12-09 09:03:56,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:56,370 INFO L225 Difference]: With dead ends: 99 [2018-12-09 09:03:56,370 INFO L226 Difference]: Without dead ends: 77 [2018-12-09 09:03:56,371 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=307, Invalid=1585, Unknown=0, NotChecked=0, Total=1892 [2018-12-09 09:03:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-12-09 09:03:56,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 59. [2018-12-09 09:03:56,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-12-09 09:03:56,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2018-12-09 09:03:56,377 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 45 [2018-12-09 09:03:56,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:56,377 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2018-12-09 09:03:56,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-09 09:03:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2018-12-09 09:03:56,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 09:03:56,378 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:56,378 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:56,378 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:56,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:56,378 INFO L82 PathProgramCache]: Analyzing trace with hash 681136710, now seen corresponding path program 1 times [2018-12-09 09:03:56,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:56,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:56,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:56,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:56,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-12-09 09:03:56,529 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:03:56,530 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:03:56,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:56,567 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:03:56,820 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 09:03:56,845 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:03:56,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 34 [2018-12-09 09:03:56,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-12-09 09:03:56,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-12-09 09:03:56,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1032, Unknown=0, NotChecked=0, Total=1122 [2018-12-09 09:03:56,846 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 34 states. [2018-12-09 09:03:57,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:57,640 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2018-12-09 09:03:57,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-12-09 09:03:57,641 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 57 [2018-12-09 09:03:57,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:57,641 INFO L225 Difference]: With dead ends: 105 [2018-12-09 09:03:57,642 INFO L226 Difference]: Without dead ends: 88 [2018-12-09 09:03:57,642 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=3143, Unknown=0, NotChecked=0, Total=3540 [2018-12-09 09:03:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-12-09 09:03:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2018-12-09 09:03:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-12-09 09:03:57,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2018-12-09 09:03:57,648 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 57 [2018-12-09 09:03:57,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:57,649 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2018-12-09 09:03:57,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-12-09 09:03:57,649 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2018-12-09 09:03:57,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 09:03:57,650 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:57,650 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:57,650 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:57,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:57,650 INFO L82 PathProgramCache]: Analyzing trace with hash -128209916, now seen corresponding path program 1 times [2018-12-09 09:03:57,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:57,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:57,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:57,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:57,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:57,785 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 09:03:57,785 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:03:57,785 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:03:57,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:57,814 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:03:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 09:03:57,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:03:57,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 26 [2018-12-09 09:03:57,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-12-09 09:03:57,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-12-09 09:03:57,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2018-12-09 09:03:57,928 INFO L87 Difference]: Start difference. First operand 72 states and 81 transitions. Second operand 26 states. [2018-12-09 09:03:58,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:58,464 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2018-12-09 09:03:58,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-12-09 09:03:58,464 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 57 [2018-12-09 09:03:58,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:58,465 INFO L225 Difference]: With dead ends: 83 [2018-12-09 09:03:58,465 INFO L226 Difference]: Without dead ends: 80 [2018-12-09 09:03:58,465 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=1516, Unknown=0, NotChecked=0, Total=1722 [2018-12-09 09:03:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-12-09 09:03:58,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2018-12-09 09:03:58,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-12-09 09:03:58,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2018-12-09 09:03:58,476 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 57 [2018-12-09 09:03:58,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:58,476 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2018-12-09 09:03:58,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-12-09 09:03:58,477 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2018-12-09 09:03:58,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-12-09 09:03:58,477 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:58,478 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:58,478 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:58,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:58,478 INFO L82 PathProgramCache]: Analyzing trace with hash -715015930, now seen corresponding path program 1 times [2018-12-09 09:03:58,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:58,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:58,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:58,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:58,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:58,566 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 09:03:58,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 09:03:58,566 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 09:03:58,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 09:03:58,598 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 09:03:58,642 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-12-09 09:03:58,657 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 09:03:58,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2018-12-09 09:03:58,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 09:03:58,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 09:03:58,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-12-09 09:03:58,658 INFO L87 Difference]: Start difference. First operand 79 states and 89 transitions. Second operand 9 states. [2018-12-09 09:03:58,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 09:03:58,778 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2018-12-09 09:03:58,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 09:03:58,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2018-12-09 09:03:58,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 09:03:58,779 INFO L225 Difference]: With dead ends: 91 [2018-12-09 09:03:58,780 INFO L226 Difference]: Without dead ends: 74 [2018-12-09 09:03:58,780 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-12-09 09:03:58,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-12-09 09:03:58,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2018-12-09 09:03:58,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-12-09 09:03:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-12-09 09:03:58,788 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 57 [2018-12-09 09:03:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 09:03:58,788 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-12-09 09:03:58,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 09:03:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-12-09 09:03:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-12-09 09:03:58,789 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 09:03:58,789 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 09:03:58,790 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 09:03:58,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 09:03:58,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1890753460, now seen corresponding path program 1 times [2018-12-09 09:03:58,790 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 09:03:58,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 09:03:58,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:58,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 09:03:58,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 09:03:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:03:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 09:03:58,826 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 09:03:58,859 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 17 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-12-09 09:03:58,860 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-12-09 09:03:58,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:03:58 BoogieIcfgContainer [2018-12-09 09:03:58,878 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 09:03:58,878 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 09:03:58,878 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 09:03:58,878 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 09:03:58,879 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:03:53" (3/4) ... [2018-12-09 09:03:58,880 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-12-09 09:03:58,887 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 17 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-12-09 09:03:58,887 WARN L1298 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# [2018-12-09 09:03:58,926 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a836a08c-a44c-482a-ac28-1847adcb4dd6/bin-2019/uautomizer/witness.graphml [2018-12-09 09:03:58,926 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 09:03:58,927 INFO L168 Benchmark]: Toolchain (without parser) took 6020.04 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 310.4 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -149.2 MB). Peak memory consumption was 161.2 MB. Max. memory is 11.5 GB. [2018-12-09 09:03:58,928 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 09:03:58,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. [2018-12-09 09:03:58,929 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2018-12-09 09:03:58,929 INFO L168 Benchmark]: Boogie Preprocessor took 16.71 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. [2018-12-09 09:03:58,930 INFO L168 Benchmark]: RCFGBuilder took 198.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 09:03:58,930 INFO L168 Benchmark]: TraceAbstraction took 5466.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 176.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -23.6 MB). Peak memory consumption was 153.1 MB. Max. memory is 11.5 GB. [2018-12-09 09:03:58,930 INFO L168 Benchmark]: Witness Printer took 48.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. [2018-12-09 09:03:58,932 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 266.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -160.6 MB). Peak memory consumption was 30.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.79 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.71 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. * RCFGBuilder took 198.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5466.28 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 176.7 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -23.6 MB). Peak memory consumption was 153.1 MB. Max. memory is 11.5 GB. * Witness Printer took 48.31 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 17 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 17 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 13 could not be translated for associated CType STRUCT~~list_head?prev~*list_head?next~*list_head# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; VAL [\old(elem)=14, \old(elem)=9, \old(guard_malloc_counter)=12, \old(guard_malloc_counter)=11, \old(head)=null, \old(head)=null, elem={0:0}, guard_malloc_counter={0:0}, head={15:0}] [L903] struct list_head *dev1, *dev2; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:0}, head={15:0}] [L904] CALL, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={15:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={15:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:0}, head={15:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={15:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:1}, elem={0:0}, guard_malloc_counter={0:1}, head={15:0}, size=8] [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:1}, head={15:0}, my_malloc(sizeof(*dev1))={0:1}] [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={15:0}] [L879] CALL, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={15:0}] [L871] (size > 0) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=1, \old(size)=8, elem={0:0}, guard_malloc_counter={0:1}, head={15:0}, size=8] [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, \result={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={15:0}, size=8] [L879] RET, EXPR __getMemory(size) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=1, \old(guard_malloc_counter)=0, \old(size)=8, __getMemory(size)={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={15:0}, size=8] [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, elem={0:0}, guard_malloc_counter={0:2}, head={15:0}, my_malloc(sizeof(*dev2))={0:2}] [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:0}, guard_malloc_counter={0:2}, head={15:0}] [L907] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:0}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, head={15:0}, new={0:2}, new={0:2}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, head={15:0}, new={0:2}, new={0:2}] [L907] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:2}, guard_malloc_counter={0:2}, head={15:0}] [L908] CALL list_add(dev1, &head) VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:2}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, head={15:0}, new={0:1}, new={0:1}] [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new VAL [\old(elem)=2, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, head={15:0}, new={0:1}, new={0:1}] [L908] RET list_add(dev1, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}] [L909] CALL list_del(dev2) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, guard_malloc_counter={0:2}, head={15:0}] [L896] COND FALSE !(entry==elem) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, entry={0:2}, entry={0:2}, guard_malloc_counter={0:2}, head={15:0}] [L909] RET list_del(dev2) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}] [L910] CALL list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, new={0:2}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, head={15:0}, new={0:2}, new={0:2}] [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) VAL [\old(elem)=0, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, dev1={0:1}, dev2={0:2}, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}] [L913] CALL list_add(dev1, &head) VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, new={0:1}] [L890] (new!=elem) ? (0) : __blast_assert () VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}, head={15:0}, head={15:0}, new={0:1}, new={0:1}] [L890] CALL __blast_assert () VAL [\old(elem)=0, \old(elem)=1, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}] [L6] __VERIFIER_error() VAL [\old(elem)=1, \old(elem)=0, \old(guard_malloc_counter)=0, \old(guard_malloc_counter)=0, elem={0:1}, guard_malloc_counter={0:2}, head={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 48 locations, 1 error locations. UNSAFE Result, 5.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 3.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 319 SDtfs, 502 SDslu, 1362 SDs, 0 SdLazy, 4890 SolverSat, 569 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 514 GetRequests, 274 SyntacticMatches, 11 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 56 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 713 NumberOfCodeBlocks, 713 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 635 ConstructedInterpolants, 0 QuantifiedInterpolants, 109006 SizeOfPredicates, 41 NumberOfNonLiveVariables, 1699 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 136/211 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...