./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 1b97bc973900e2f9596f533e03f1df56d5945f81 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 1b97bc973900e2f9596f533e03f1df56d5945f81 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.23-1dbac8b [2018-11-10 04:06:54,046 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:06:54,048 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:06:54,056 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:06:54,056 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:06:54,057 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:06:54,058 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:06:54,059 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:06:54,060 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:06:54,061 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:06:54,062 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:06:54,062 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:06:54,063 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:06:54,064 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:06:54,065 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:06:54,066 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:06:54,066 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:06:54,068 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:06:54,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:06:54,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:06:54,072 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:06:54,073 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:06:54,075 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:06:54,075 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:06:54,075 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:06:54,076 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:06:54,077 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:06:54,077 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:06:54,078 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:06:54,079 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:06:54,079 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:06:54,080 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:06:54,080 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:06:54,080 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:06:54,081 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:06:54,081 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:06:54,082 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-10 04:06:54,092 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:06:54,092 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:06:54,093 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:06:54,093 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:06:54,094 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:06:54,094 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:06:54,094 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:06:54,094 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:06:54,094 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:06:54,095 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:06:54,096 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:06:54,096 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:06:54,096 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:06:54,096 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:06:54,096 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:06:54,096 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:06:54,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:06:54,097 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:06:54,097 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:06:54,097 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:06:54,097 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 04:06:54,097 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:06:54,097 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 04:06:54,098 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_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 -> 1b97bc973900e2f9596f533e03f1df56d5945f81 [2018-11-10 04:06:54,121 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:06:54,131 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:06:54,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:06:54,135 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:06:54,136 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:06:54,136 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-10 04:06:54,185 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/caa795a94/d894615e77854916a2b3509479d7051a/FLAGb91b8c4ac [2018-11-10 04:06:54,615 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:06:54,616 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-10 04:06:54,625 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/caa795a94/d894615e77854916a2b3509479d7051a/FLAGb91b8c4ac [2018-11-10 04:06:54,636 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/caa795a94/d894615e77854916a2b3509479d7051a [2018-11-10 04:06:54,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:06:54,639 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:06:54,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:06:54,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:06:54,643 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:06:54,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:06:54" (1/1) ... [2018-11-10 04:06:54,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@294cde19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:54, skipping insertion in model container [2018-11-10 04:06:54,646 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:06:54" (1/1) ... [2018-11-10 04:06:54,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:06:54,690 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:06:54,921 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:06:54,927 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:06:54,972 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:06:55,008 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:06:55,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55 WrapperNode [2018-11-10 04:06:55,009 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:06:55,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:06:55,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:06:55,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:06:55,067 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... [2018-11-10 04:06:55,106 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:06:55,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:06:55,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:06:55,106 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:06:55,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2018-11-10 04:06:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2018-11-10 04:06:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2018-11-10 04:06:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2018-11-10 04:06:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2018-11-10 04:06:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:06:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:06:55,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 04:06:55,151 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 04:06:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 04:06:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 04:06:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 04:06:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 04:06:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 04:06:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 04:06:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 04:06:55,159 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 04:06:55,160 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 04:06:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 04:06:55,162 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 04:06:55,163 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 04:06:55,164 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2018-11-10 04:06:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:06:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2018-11-10 04:06:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2018-11-10 04:06:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:06:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:06:55,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:06:55,559 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:06:55,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:06:55 BoogieIcfgContainer [2018-11-10 04:06:55,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:06:55,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:06:55,561 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:06:55,564 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:06:55,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:06:54" (1/3) ... [2018-11-10 04:06:55,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f52206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:06:55, skipping insertion in model container [2018-11-10 04:06:55,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:55" (2/3) ... [2018-11-10 04:06:55,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62f52206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:06:55, skipping insertion in model container [2018-11-10 04:06:55,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:06:55" (3/3) ... [2018-11-10 04:06:55,567 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-10 04:06:55,575 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:06:55,580 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:06:55,590 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:06:55,611 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:06:55,612 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:06:55,612 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:06:55,612 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:06:55,612 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:06:55,612 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:06:55,612 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:06:55,612 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:06:55,612 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:06:55,631 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2018-11-10 04:06:55,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 04:06:55,638 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:06:55,639 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1] [2018-11-10 04:06:55,641 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:06:55,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:06:55,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1640490052, now seen corresponding path program 1 times [2018-11-10 04:06:55,648 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:06:55,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:06:55,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:55,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:55,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:55,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:55,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 04:06:55,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:06:55,771 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 [2018-11-10 04:06:55,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:55,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:55,839 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:06:55,852 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:06:55,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:06:55,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2018-11-10 04:06:55,886 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:06:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:06:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:06:55,896 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 2 states. [2018-11-10 04:06:55,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:06:55,919 INFO L93 Difference]: Finished difference Result 186 states and 228 transitions. [2018-11-10 04:06:55,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:06:55,920 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 39 [2018-11-10 04:06:55,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:06:55,927 INFO L225 Difference]: With dead ends: 186 [2018-11-10 04:06:55,927 INFO L226 Difference]: Without dead ends: 73 [2018-11-10 04:06:55,930 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:06:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-11-10 04:06:55,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-11-10 04:06:55,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-10 04:06:55,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2018-11-10 04:06:55,964 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 39 [2018-11-10 04:06:55,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:06:55,965 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2018-11-10 04:06:55,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:06:55,965 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2018-11-10 04:06:55,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-10 04:06:55,967 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:06:55,968 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:06:55,968 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:06:55,968 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:06:55,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1862713634, now seen corresponding path program 1 times [2018-11-10 04:06:55,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:06:55,969 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:06:55,970 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:55,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:55,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:06:56,113 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:06:56,113 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 [2018-11-10 04:06:56,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:56,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:06:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:06:56,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-10 04:06:56,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-10 04:06:56,216 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:06:56,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:06:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:06:56,216 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 9 states. [2018-11-10 04:06:56,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:06:56,395 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2018-11-10 04:06:56,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:06:56,396 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2018-11-10 04:06:56,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:06:56,397 INFO L225 Difference]: With dead ends: 131 [2018-11-10 04:06:56,397 INFO L226 Difference]: Without dead ends: 76 [2018-11-10 04:06:56,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:06:56,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-11-10 04:06:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-11-10 04:06:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-10 04:06:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2018-11-10 04:06:56,405 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 51 [2018-11-10 04:06:56,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:06:56,406 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2018-11-10 04:06:56,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:06:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2018-11-10 04:06:56,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-10 04:06:56,408 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:06:56,408 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:06:56,408 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:06:56,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:06:56,409 INFO L82 PathProgramCache]: Analyzing trace with hash -547439628, now seen corresponding path program 1 times [2018-11-10 04:06:56,409 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:06:56,409 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:06:56,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:56,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:56,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-10 04:06:56,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:06:56,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-10 04:06:56,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-10 04:06:56,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-10 04:06:56,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-10 04:06:56,564 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand 11 states. [2018-11-10 04:06:56,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:06:56,743 INFO L93 Difference]: Finished difference Result 105 states and 119 transitions. [2018-11-10 04:06:56,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-10 04:06:56,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2018-11-10 04:06:56,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:06:56,748 INFO L225 Difference]: With dead ends: 105 [2018-11-10 04:06:56,748 INFO L226 Difference]: Without dead ends: 101 [2018-11-10 04:06:56,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:06:56,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-11-10 04:06:56,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 87. [2018-11-10 04:06:56,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-10 04:06:56,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2018-11-10 04:06:56,762 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 59 [2018-11-10 04:06:56,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:06:56,763 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2018-11-10 04:06:56,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-10 04:06:56,763 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2018-11-10 04:06:56,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-10 04:06:56,765 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:06:56,765 INFO L375 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, 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] [2018-11-10 04:06:56,765 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:06:56,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:06:56,766 INFO L82 PathProgramCache]: Analyzing trace with hash 360096411, now seen corresponding path program 1 times [2018-11-10 04:06:56,766 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:06:56,766 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:06:56,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:56,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:56,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:56,899 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:06:56,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 04:06:56,900 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 [2018-11-10 04:06:56,907 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:56,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:56,941 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:06:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 04:06:56,982 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:06:56,982 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-10 04:06:56,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-10 04:06:56,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-10 04:06:56,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:06:56,983 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 10 states. [2018-11-10 04:06:57,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:06:57,098 INFO L93 Difference]: Finished difference Result 161 states and 186 transitions. [2018-11-10 04:06:57,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-10 04:06:57,099 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 63 [2018-11-10 04:06:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:06:57,100 INFO L225 Difference]: With dead ends: 161 [2018-11-10 04:06:57,100 INFO L226 Difference]: Without dead ends: 95 [2018-11-10 04:06:57,101 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:06:57,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-10 04:06:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2018-11-10 04:06:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2018-11-10 04:06:57,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 108 transitions. [2018-11-10 04:06:57,113 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 108 transitions. Word has length 63 [2018-11-10 04:06:57,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:06:57,114 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 108 transitions. [2018-11-10 04:06:57,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-10 04:06:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 108 transitions. [2018-11-10 04:06:57,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-10 04:06:57,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:06:57,117 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:06:57,117 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:06:57,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:06:57,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1842032305, now seen corresponding path program 2 times [2018-11-10 04:06:57,118 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:06:57,118 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:06:57,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:57,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:06:57,120 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:57,228 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-10 04:06:57,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:06:57,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-10 04:06:57,229 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-10 04:06:57,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-10 04:06:57,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-10 04:06:57,229 INFO L87 Difference]: Start difference. First operand 95 states and 108 transitions. Second operand 7 states. [2018-11-10 04:06:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:06:57,308 INFO L93 Difference]: Finished difference Result 169 states and 197 transitions. [2018-11-10 04:06:57,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-10 04:06:57,308 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2018-11-10 04:06:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:06:57,310 INFO L225 Difference]: With dead ends: 169 [2018-11-10 04:06:57,310 INFO L226 Difference]: Without dead ends: 113 [2018-11-10 04:06:57,310 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:06:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2018-11-10 04:06:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2018-11-10 04:06:57,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-11-10 04:06:57,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2018-11-10 04:06:57,321 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 71 [2018-11-10 04:06:57,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:06:57,322 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2018-11-10 04:06:57,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-10 04:06:57,322 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2018-11-10 04:06:57,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-10 04:06:57,323 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:06:57,323 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:06:57,323 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:06:57,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:06:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash 253684403, now seen corresponding path program 1 times [2018-11-10 04:06:57,324 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 04:06:57,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 04:06:57,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:57,325 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:06:57,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 04:06:57,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:06:57,362 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.smtinterpol.util.Coercion.buildApp(Coercion.java:60) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator$PathInfo$PathEnd.mergeCongPath(CCInterpolator.java:293) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator$PathInfo$PathEnd.access$0(CCInterpolator.java:241) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator$PathInfo.interpolatePathInfo(CCInterpolator.java:376) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator$PathInfo$PathEnd.mergeCongPath(CCInterpolator.java:258) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator$PathInfo$PathEnd.access$0(CCInterpolator.java:241) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator$PathInfo.interpolatePathInfo(CCInterpolator.java:376) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.CCInterpolator.computeInterpolants(CCInterpolator.java:507) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:282) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-10 04:06:57,366 INFO L168 Benchmark]: Toolchain (without parser) took 2727.46 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 951.1 MB in the beginning and 879.3 MB in the end (delta: 71.8 MB). Peak memory consumption was 237.5 MB. Max. memory is 11.5 GB. [2018-11-10 04:06:57,367 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:06:57,368 INFO L168 Benchmark]: CACSL2BoogieTranslator took 369.50 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 926.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. [2018-11-10 04:06:57,368 INFO L168 Benchmark]: Boogie Preprocessor took 96.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 926.9 MB in the beginning and 1.2 GB in the end (delta: -233.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:06:57,369 INFO L168 Benchmark]: RCFGBuilder took 454.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. [2018-11-10 04:06:57,369 INFO L168 Benchmark]: TraceAbstraction took 1804.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 879.3 MB in the end (delta: 225.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:06:57,373 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 369.50 ms. Allocated memory is still 1.0 GB. Free memory was 951.1 MB in the beginning and 926.9 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 96.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 165.7 MB). Free memory was 926.9 MB in the beginning and 1.2 GB in the end (delta: -233.0 MB). Peak memory consumption was 16.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 454.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 55.0 MB). Peak memory consumption was 55.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1804.23 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 879.3 MB in the end (delta: 225.7 MB). Peak memory consumption was 225.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.smtinterpol.util.Coercion.buildApp(Coercion.java:60) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 04:06:59,070 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 04:06:59,071 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 04:06:59,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 04:06:59,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 04:06:59,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 04:06:59,084 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 04:06:59,085 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 04:06:59,087 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 04:06:59,087 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 04:06:59,088 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 04:06:59,088 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 04:06:59,090 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 04:06:59,090 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 04:06:59,091 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 04:06:59,092 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 04:06:59,093 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 04:06:59,094 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 04:06:59,096 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 04:06:59,098 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 04:06:59,099 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 04:06:59,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 04:06:59,102 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 04:06:59,102 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 04:06:59,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 04:06:59,104 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 04:06:59,105 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 04:06:59,105 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 04:06:59,106 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 04:06:59,107 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 04:06:59,108 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 04:06:59,108 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 04:06:59,108 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 04:06:59,109 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 04:06:59,109 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 04:06:59,110 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 04:06:59,110 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-10 04:06:59,123 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 04:06:59,123 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 04:06:59,124 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 04:06:59,124 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-10 04:06:59,125 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 04:06:59,125 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 04:06:59,125 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 04:06:59,125 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 04:06:59,126 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 04:06:59,127 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 04:06:59,127 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 04:06:59,128 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 04:06:59,129 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 04:06:59,129 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 04:06:59,129 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 04:06:59,129 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 04:06:59,129 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 04:06:59,129 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 04:06:59,130 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 04:06:59,130 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 04:06:59,130 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 04:06:59,130 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-10 04:06:59,130 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 04:06:59,130 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 04:06:59,131 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 04:06:59,131 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_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 -> 1b97bc973900e2f9596f533e03f1df56d5945f81 [2018-11-10 04:06:59,166 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 04:06:59,176 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 04:06:59,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 04:06:59,181 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 04:06:59,182 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 04:06:59,182 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/../../sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-10 04:06:59,237 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/784ef107d/ff311f970ad441c29b0f4291409c1250/FLAG1a7c0ea5f [2018-11-10 04:06:59,626 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 04:06:59,626 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/sv-benchmarks/c/list-ext3-properties/sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-10 04:06:59,635 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/784ef107d/ff311f970ad441c29b0f4291409c1250/FLAG1a7c0ea5f [2018-11-10 04:06:59,645 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/data/784ef107d/ff311f970ad441c29b0f4291409c1250 [2018-11-10 04:06:59,647 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 04:06:59,648 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-10 04:06:59,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 04:06:59,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 04:06:59,653 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 04:06:59,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:06:59" (1/1) ... [2018-11-10 04:06:59,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a5a0800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:06:59, skipping insertion in model container [2018-11-10 04:06:59,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 04:06:59" (1/1) ... [2018-11-10 04:06:59,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 04:06:59,698 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 04:06:59,940 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:06:59,946 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 04:06:59,988 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 04:07:00,020 INFO L193 MainTranslator]: Completed translation [2018-11-10 04:07:00,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00 WrapperNode [2018-11-10 04:07:00,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 04:07:00,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 04:07:00,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 04:07:00,021 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 04:07:00,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,046 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,118 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... [2018-11-10 04:07:00,129 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 04:07:00,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 04:07:00,130 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 04:07:00,130 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 04:07:00,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/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 [2018-11-10 04:07:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 04:07:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 04:07:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2018-11-10 04:07:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2018-11-10 04:07:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure exit [2018-11-10 04:07:00,169 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2018-11-10 04:07:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2018-11-10 04:07:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2018-11-10 04:07:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2018-11-10 04:07:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2018-11-10 04:07:00,170 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 04:07:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-10 04:07:00,170 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2018-11-10 04:07:00,171 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2018-11-10 04:07:00,172 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure select [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-11-10 04:07:00,173 INFO L130 BoogieDeclarations]: Found specification of procedure random [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2018-11-10 04:07:00,174 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2018-11-10 04:07:00,175 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2018-11-10 04:07:00,176 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-11-10 04:07:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-11-10 04:07:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-11-10 04:07:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-11-10 04:07:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2018-11-10 04:07:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2018-11-10 04:07:00,177 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure free [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2018-11-10 04:07:00,178 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2018-11-10 04:07:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-11-10 04:07:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2018-11-10 04:07:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2018-11-10 04:07:00,179 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2018-11-10 04:07:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2018-11-10 04:07:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2018-11-10 04:07:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-10 04:07:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2018-11-10 04:07:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2018-11-10 04:07:00,180 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2018-11-10 04:07:00,181 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure system [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure div [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2018-11-10 04:07:00,182 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2018-11-10 04:07:00,183 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-10 04:07:00,184 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 04:07:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 04:07:00,598 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 04:07:00,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:07:00 BoogieIcfgContainer [2018-11-10 04:07:00,598 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 04:07:00,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 04:07:00,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 04:07:00,603 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 04:07:00,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 04:06:59" (1/3) ... [2018-11-10 04:07:00,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0db79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:07:00, skipping insertion in model container [2018-11-10 04:07:00,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 04:07:00" (2/3) ... [2018-11-10 04:07:00,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0db79b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 04:07:00, skipping insertion in model container [2018-11-10 04:07:00,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:07:00" (3/3) ... [2018-11-10 04:07:00,607 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert_false-unreach-call_false-valid-memcleanup.i [2018-11-10 04:07:00,616 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 04:07:00,624 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 04:07:00,637 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 04:07:00,659 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 04:07:00,659 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 04:07:00,660 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 04:07:00,660 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 04:07:00,660 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 04:07:00,660 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 04:07:00,660 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 04:07:00,660 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 04:07:00,660 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 04:07:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2018-11-10 04:07:00,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-10 04:07:00,681 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:00,682 INFO L375 BasicCegarLoop]: trace histogram [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, 1] [2018-11-10 04:07:00,684 INFO L424 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:00,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:00,689 INFO L82 PathProgramCache]: Analyzing trace with hash -2105831256, now seen corresponding path program 1 times [2018-11-10 04:07:00,692 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:00,693 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:00,708 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:07:00,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:07:00,772 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:00,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-10 04:07:00,793 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (2)] Exception during sending of exit command (exit): Broken pipe [2018-11-10 04:07:00,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:07:00,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 04:07:00,802 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 04:07:00,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 04:07:00,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:07:00,817 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2018-11-10 04:07:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:00,845 INFO L93 Difference]: Finished difference Result 176 states and 214 transitions. [2018-11-10 04:07:00,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 04:07:00,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 38 [2018-11-10 04:07:00,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:00,856 INFO L225 Difference]: With dead ends: 176 [2018-11-10 04:07:00,856 INFO L226 Difference]: Without dead ends: 68 [2018-11-10 04:07:00,860 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 04:07:00,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2018-11-10 04:07:00,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2018-11-10 04:07:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2018-11-10 04:07:00,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2018-11-10 04:07:00,895 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 38 [2018-11-10 04:07:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:00,896 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2018-11-10 04:07:00,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 04:07:00,896 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2018-11-10 04:07:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-10 04:07:00,897 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:00,898 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1] [2018-11-10 04:07:00,898 INFO L424 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:00,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:00,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1662527096, now seen corresponding path program 1 times [2018-11-10 04:07:00,899 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:00,899 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:00,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:07:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:07:00,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:07:01,102 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:07:01,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:07:01,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-10 04:07:01,105 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-10 04:07:01,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-10 04:07:01,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-10 04:07:01,106 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 9 states. [2018-11-10 04:07:01,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:01,431 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2018-11-10 04:07:01,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 04:07:01,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 44 [2018-11-10 04:07:01,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:01,435 INFO L225 Difference]: With dead ends: 144 [2018-11-10 04:07:01,435 INFO L226 Difference]: Without dead ends: 97 [2018-11-10 04:07:01,436 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-10 04:07:01,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-10 04:07:01,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2018-11-10 04:07:01,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-11-10 04:07:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 94 transitions. [2018-11-10 04:07:01,452 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 94 transitions. Word has length 44 [2018-11-10 04:07:01,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:01,452 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 94 transitions. [2018-11-10 04:07:01,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-10 04:07:01,453 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 94 transitions. [2018-11-10 04:07:01,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-10 04:07:01,454 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:01,454 INFO L375 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1] [2018-11-10 04:07:01,454 INFO L424 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:01,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash 767411746, now seen corresponding path program 1 times [2018-11-10 04:07:01,455 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:01,455 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:01,469 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:07:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:07:01,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:07:01,635 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:07:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:07:01,935 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:07:01,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-10 04:07:01,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 04:07:01,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 04:07:01,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:07:01,936 INFO L87 Difference]: Start difference. First operand 82 states and 94 transitions. Second operand 17 states. [2018-11-10 04:07:02,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:02,687 INFO L93 Difference]: Finished difference Result 175 states and 216 transitions. [2018-11-10 04:07:02,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 04:07:02,688 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 46 [2018-11-10 04:07:02,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:02,690 INFO L225 Difference]: With dead ends: 175 [2018-11-10 04:07:02,691 INFO L226 Difference]: Without dead ends: 120 [2018-11-10 04:07:02,692 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2018-11-10 04:07:02,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-10 04:07:02,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 71. [2018-11-10 04:07:02,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-10 04:07:02,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2018-11-10 04:07:02,704 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 46 [2018-11-10 04:07:02,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:02,705 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2018-11-10 04:07:02,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 04:07:02,706 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2018-11-10 04:07:02,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-10 04:07:02,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:02,707 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:07:02,707 INFO L424 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:02,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:02,708 INFO L82 PathProgramCache]: Analyzing trace with hash -973217102, now seen corresponding path program 1 times [2018-11-10 04:07:02,708 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:02,708 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:02,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:07:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:07:02,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:07:02,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:07:03,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:07:03,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:07:03,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-11-10 04:07:03,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-10 04:07:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-10 04:07:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2018-11-10 04:07:03,203 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 17 states. [2018-11-10 04:07:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:03,715 INFO L93 Difference]: Finished difference Result 185 states and 227 transitions. [2018-11-10 04:07:03,715 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-10 04:07:03,715 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 52 [2018-11-10 04:07:03,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:03,717 INFO L225 Difference]: With dead ends: 185 [2018-11-10 04:07:03,717 INFO L226 Difference]: Without dead ends: 138 [2018-11-10 04:07:03,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:07:03,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-10 04:07:03,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 92. [2018-11-10 04:07:03,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-11-10 04:07:03,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 105 transitions. [2018-11-10 04:07:03,732 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 105 transitions. Word has length 52 [2018-11-10 04:07:03,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:03,733 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 105 transitions. [2018-11-10 04:07:03,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-10 04:07:03,733 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 105 transitions. [2018-11-10 04:07:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-10 04:07:03,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:03,734 INFO L375 BasicCegarLoop]: trace histogram [4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 04:07:03,734 INFO L424 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:03,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:03,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1438316186, now seen corresponding path program 1 times [2018-11-10 04:07:03,735 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:03,735 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:03,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 04:07:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:07:03,809 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:07:03,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:07:04,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-10 04:07:04,470 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:07:04,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2018-11-10 04:07:04,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-10 04:07:04,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-10 04:07:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2018-11-10 04:07:04,471 INFO L87 Difference]: Start difference. First operand 92 states and 105 transitions. Second operand 21 states. [2018-11-10 04:07:05,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:05,700 INFO L93 Difference]: Finished difference Result 193 states and 241 transitions. [2018-11-10 04:07:05,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-10 04:07:05,701 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 56 [2018-11-10 04:07:05,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:05,702 INFO L225 Difference]: With dead ends: 193 [2018-11-10 04:07:05,702 INFO L226 Difference]: Without dead ends: 136 [2018-11-10 04:07:05,703 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=678, Unknown=0, NotChecked=0, Total=812 [2018-11-10 04:07:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-11-10 04:07:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 79. [2018-11-10 04:07:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-10 04:07:05,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 86 transitions. [2018-11-10 04:07:05,713 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 86 transitions. Word has length 56 [2018-11-10 04:07:05,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:05,714 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 86 transitions. [2018-11-10 04:07:05,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-10 04:07:05,714 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 86 transitions. [2018-11-10 04:07:05,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-10 04:07:05,716 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:05,716 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1] [2018-11-10 04:07:05,717 INFO L424 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:05,717 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:05,717 INFO L82 PathProgramCache]: Analyzing trace with hash 875897308, now seen corresponding path program 2 times [2018-11-10 04:07:05,717 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:05,717 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:05,736 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 04:07:05,806 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:07:05,806 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:07:05,818 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:05,875 INFO L477 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 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:07:05,878 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-11-10 04:07:05,879 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:05,881 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:05,886 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:05,887 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:8 [2018-11-10 04:07:05,946 INFO L477 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 16 treesize of output 12 [2018-11-10 04:07:05,948 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 12 treesize of output 4 [2018-11-10 04:07:05,949 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:05,950 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:05,952 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:05,952 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:16, output treesize:4 [2018-11-10 04:07:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 04:07:05,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 04:07:06,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 04:07:06,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-10 04:07:06,001 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-10 04:07:06,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-10 04:07:06,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2018-11-10 04:07:06,001 INFO L87 Difference]: Start difference. First operand 79 states and 86 transitions. Second operand 12 states. [2018-11-10 04:07:16,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:16,469 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2018-11-10 04:07:16,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-10 04:07:16,469 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2018-11-10 04:07:16,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:16,470 INFO L225 Difference]: With dead ends: 133 [2018-11-10 04:07:16,471 INFO L226 Difference]: Without dead ends: 127 [2018-11-10 04:07:16,471 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:07:16,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-11-10 04:07:16,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 100. [2018-11-10 04:07:16,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-11-10 04:07:16,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2018-11-10 04:07:16,484 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 60 [2018-11-10 04:07:16,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:16,484 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2018-11-10 04:07:16,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-10 04:07:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2018-11-10 04:07:16,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-10 04:07:16,486 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:16,486 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1] [2018-11-10 04:07:16,486 INFO L424 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:16,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:16,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1620669483, now seen corresponding path program 1 times [2018-11-10 04:07:16,487 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:16,487 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:16,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:07:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 04:07:16,617 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:16,671 INFO L477 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 11 treesize of output 8 [2018-11-10 04:07:16,673 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 7 [2018-11-10 04:07:16,674 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,676 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,685 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,686 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2018-11-10 04:07:16,786 INFO L477 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 3 case distinctions, treesize of input 20 treesize of output 32 [2018-11-10 04:07:16,796 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 18 treesize of output 18 [2018-11-10 04:07:16,797 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,831 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 17 treesize of output 16 [2018-11-10 04:07:16,832 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,842 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,857 INFO L477 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 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-10 04:07:16,860 INFO L477 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 8 treesize of output 7 [2018-11-10 04:07:16,861 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,863 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,878 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,878 INFO L202 ElimStorePlain]: Needed 6 recursive calls to eliminate 3 variables, input treesize:38, output treesize:31 [2018-11-10 04:07:16,977 INFO L477 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 11 [2018-11-10 04:07:16,980 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-11-10 04:07:16,980 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,983 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:16,996 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-10 04:07:16,996 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:31 [2018-11-10 04:07:17,320 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 04:07:17,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:07:19,765 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-11-10 04:07:19,766 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:19,766 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:19,767 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:39, output treesize:1 [2018-11-10 04:07:19,960 INFO L477 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 26 [2018-11-10 04:07:19,992 INFO L477 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 9 treesize of output 8 [2018-11-10 04:07:19,992 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,025 INFO L477 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 20 treesize of output 16 [2018-11-10 04:07:20,027 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 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 13 treesize of output 4 [2018-11-10 04:07:20,027 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,032 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,034 INFO L477 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 21 treesize of output 19 [2018-11-10 04:07:20,036 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-11-10 04:07:20,036 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,042 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,044 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 20 treesize of output 16 [2018-11-10 04:07:20,046 INFO L477 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-10 04:07:20,046 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,051 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-10 04:07:20,069 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-10 04:07:20,088 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-10 04:07:20,088 INFO L202 ElimStorePlain]: Needed 9 recursive calls to eliminate 3 variables, input treesize:32, output treesize:9 [2018-11-10 04:07:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-10 04:07:20,171 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:07:20,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 32 [2018-11-10 04:07:20,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-10 04:07:20,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-10 04:07:20,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=890, Unknown=1, NotChecked=0, Total=992 [2018-11-10 04:07:20,172 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 32 states. [2018-11-10 04:07:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:24,394 INFO L93 Difference]: Finished difference Result 160 states and 174 transitions. [2018-11-10 04:07:24,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-10 04:07:24,395 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 64 [2018-11-10 04:07:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:24,396 INFO L225 Difference]: With dead ends: 160 [2018-11-10 04:07:24,396 INFO L226 Difference]: Without dead ends: 154 [2018-11-10 04:07:24,397 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 99 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=340, Invalid=2209, Unknown=1, NotChecked=0, Total=2550 [2018-11-10 04:07:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2018-11-10 04:07:24,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 104. [2018-11-10 04:07:24,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-10 04:07:24,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2018-11-10 04:07:24,408 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 64 [2018-11-10 04:07:24,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:24,409 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2018-11-10 04:07:24,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-10 04:07:24,409 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2018-11-10 04:07:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-10 04:07:24,410 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:24,410 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2018-11-10 04:07:24,410 INFO L424 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:24,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:24,411 INFO L82 PathProgramCache]: Analyzing trace with hash -546287282, now seen corresponding path program 2 times [2018-11-10 04:07:24,411 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:24,411 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:24,425 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-10 04:07:24,481 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-10 04:07:24,481 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-10 04:07:24,485 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 04:07:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-10 04:07:24,615 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 04:07:24,907 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-10 04:07:24,910 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-10 04:07:24,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 20 [2018-11-10 04:07:24,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-10 04:07:24,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-10 04:07:24,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2018-11-10 04:07:24,911 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 20 states. [2018-11-10 04:07:25,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 04:07:25,545 INFO L93 Difference]: Finished difference Result 190 states and 236 transitions. [2018-11-10 04:07:25,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-10 04:07:25,546 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 68 [2018-11-10 04:07:25,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 04:07:25,547 INFO L225 Difference]: With dead ends: 190 [2018-11-10 04:07:25,547 INFO L226 Difference]: Without dead ends: 187 [2018-11-10 04:07:25,548 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 115 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2018-11-10 04:07:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2018-11-10 04:07:25,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 154. [2018-11-10 04:07:25,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-11-10 04:07:25,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 184 transitions. [2018-11-10 04:07:25,569 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 184 transitions. Word has length 68 [2018-11-10 04:07:25,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 04:07:25,569 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 184 transitions. [2018-11-10 04:07:25,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-10 04:07:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 184 transitions. [2018-11-10 04:07:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-10 04:07:25,571 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 04:07:25,571 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1] [2018-11-10 04:07:25,571 INFO L424 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 04:07:25,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 04:07:25,571 INFO L82 PathProgramCache]: Analyzing trace with hash 726147572, now seen corresponding path program 1 times [2018-11-10 04:07:25,571 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 04:07:25,572 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/cvc4nyu Starting monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 04:07:25,586 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 04:07:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:07:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 04:07:25,832 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-10 04:07:25,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 04:07:25 BoogieIcfgContainer [2018-11-10 04:07:25,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-10 04:07:25,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 04:07:25,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 04:07:25,868 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 04:07:25,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 04:07:00" (3/4) ... [2018-11-10 04:07:25,870 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-10 04:07:25,939 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_d1ee71fe-dc76-4014-ae22-1953dcff590a/bin-2019/uautomizer/witness.graphml [2018-11-10 04:07:25,939 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 04:07:25,940 INFO L168 Benchmark]: Toolchain (without parser) took 26292.69 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 276.8 MB). Free memory was 946.5 MB in the beginning and 882.7 MB in the end (delta: 63.8 MB). Peak memory consumption was 340.6 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:25,941 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 04:07:25,942 INFO L168 Benchmark]: CACSL2BoogieTranslator took 371.51 ms. Allocated memory is still 1.0 GB. Free memory was 946.5 MB in the beginning and 919.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:25,942 INFO L168 Benchmark]: Boogie Preprocessor took 108.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 919.7 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:25,942 INFO L168 Benchmark]: RCFGBuilder took 469.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:25,943 INFO L168 Benchmark]: TraceAbstraction took 25267.93 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 172.0 MB). Free memory was 1.0 GB in the beginning and 891.9 MB in the end (delta: 142.9 MB). Peak memory consumption was 314.8 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:25,943 INFO L168 Benchmark]: Witness Printer took 72.04 ms. Allocated memory is still 1.3 GB. Free memory was 891.9 MB in the beginning and 882.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. [2018-11-10 04:07:25,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 371.51 ms. Allocated memory is still 1.0 GB. Free memory was 946.5 MB in the beginning and 919.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 108.39 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.9 MB). Free memory was 919.7 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 469.14 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 25267.93 ms. Allocated memory was 1.1 GB in the beginning and 1.3 GB in the end (delta: 172.0 MB). Free memory was 1.0 GB in the beginning and 891.9 MB in the end (delta: 142.9 MB). Peak memory consumption was 314.8 MB. Max. memory is 11.5 GB. * Witness Printer took 72.04 ms. Allocated memory is still 1.3 GB. Free memory was 891.9 MB in the beginning and 882.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 630]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L616] CALL, EXPR _get_nondet_int(2, 5) VAL [\old(from)=2, \old(until)=5] [L609] int len = from; VAL [\old(from)=2, \old(until)=5, from=2, len=2, until=5] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] RET return len; VAL [\old(from)=2, \old(until)=5, \result=2, from=2, len=2, until=5] [L616] EXPR _get_nondet_int(2, 5) VAL [_get_nondet_int(2, 5)=2] [L616] const int len = _get_nondet_int(2, 5); [L617] FCALL SLL s = sll_create(len); VAL [len=2, s={1610612744:0}] [L617] CALL, EXPR sll_create(len) VAL [\old(len)=2] [L564] SLL head = ((void *)0); VAL [\old(len)=2, head={0:0}, len=2] [L565] EXPR len-- VAL [\old(len)=2, head={0:0}, len=1, len--=2] [L565] COND TRUE len-- > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-2011135476:0}] [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-2011135476:0}, new_head={-2011135476:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-2011135476:0}, new_head={-2011135476:0}] [L570] FCALL new_head->next = head VAL [\old(len)=2, head={0:0}, len=1, malloc(sizeof(struct node))={-2011135476:0}, new_head={-2011135476:0}] [L571] head = new_head VAL [\old(len)=2, head={-2011135476:0}, len=1, malloc(sizeof(struct node))={-2011135476:0}, new_head={-2011135476:0}] [L565] EXPR len-- VAL [\old(len)=2, head={-2011135476:0}, len=0, len--=1, malloc(sizeof(struct node))={-2011135476:0}, new_head={-2011135476:0}] [L565] COND TRUE len-- > 0 [L566] EXPR, FCALL malloc(sizeof(struct node)) VAL [\old(len)=2, head={-2011135476:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={-2011135476:0}] [L566] SLL new_head = (SLL) malloc(sizeof(struct node)); VAL [\old(len)=2, head={-2011135476:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L567] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=2, head={-2011135476:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L570] FCALL new_head->next = head VAL [\old(len)=2, head={-2011135476:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L571] head = new_head VAL [\old(len)=2, head={9:0}, len=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L565] EXPR len-- VAL [\old(len)=2, head={9:0}, len=4294967295, len--=0, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L565] COND FALSE !(len-- > 0) [L573] RET return head; VAL [\old(len)=2, \result={9:0}, head={9:0}, len=4294967295, malloc(sizeof(struct node))={9:0}, new_head={9:0}] [L617] EXPR sll_create(len) VAL [len=2, s={1610612744:0}, sll_create(len)={9:0}] [L617] FCALL SLL s = sll_create(len); VAL [len=2, s={1610612744:0}, sll_create(len)={9:0}] [L618] CALL, EXPR _get_nondet_int(0, len - 1) VAL [\old(from)=0, \old(until)=1] [L609] int len = from; VAL [\old(from)=0, \old(until)=1, from=0, len=0, until=1] [L610] COND TRUE len < until && __VERIFIER_nondet_int() [L611] len++ VAL [\old(from)=0, \old(until)=1, from=0, len=1, until=1] [L610] COND FALSE !(len < until && __VERIFIER_nondet_int()) [L613] RET return len; VAL [\old(from)=0, \old(until)=1, \result=1, from=0, len=1, until=1] [L618] EXPR _get_nondet_int(0, len - 1) VAL [_get_nondet_int(0, len - 1)=1, len=2, s={1610612744:0}] [L618] const int k = _get_nondet_int(0, len - 1); [L619] int i = 0; VAL [i=0, k=1, len=2, s={1610612744:0}] [L620] COND FALSE !(i < k && __VERIFIER_nondet_int()) [L625] EXPR, FCALL \read(s) VAL [\read(s)={9:0}, i=0, k=1, len=2, s={1610612744:0}] [L625] CALL, EXPR sll_length(s) VAL [head={9:0}] [L576] int len = 0; VAL [head={9:0}, head={9:0}, len=0] [L577] COND TRUE \read(head) [L578] len++ VAL [head={9:0}, head={9:0}, len=1] [L579] EXPR, FCALL head->next VAL [head={9:0}, head={9:0}, head->next={-2011135476:0}, len=1] [L579] head = head->next [L577] COND TRUE \read(head) [L578] len++ VAL [head={9:0}, head={-2011135476:0}, len=2] [L579] EXPR, FCALL head->next VAL [head={9:0}, head={-2011135476:0}, head->next={0:0}, len=2] [L579] head = head->next [L577] COND FALSE !(\read(head)) VAL [head={9:0}, head={0:0}, len=2] [L581] RET return len; VAL [\result=2, head={0:0}, head={9:0}, len=2] [L625] EXPR sll_length(s) VAL [\read(s)={9:0}, i=0, k=1, len=2, s={1610612744:0}, sll_length(s)=2] [L625] COND TRUE k + len != sll_length(s) [L630] __VERIFIER_error() VAL [i=0, k=1, len=2, s={1610612744:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 100 locations, 1 error locations. UNSAFE Result, 25.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 18.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 653 SDtfs, 523 SDslu, 5613 SDs, 0 SdLazy, 2345 SolverSat, 165 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 15.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 773 GetRequests, 599 SyntacticMatches, 9 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=8, 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 277 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.8s InterpolantComputationTime, 498 NumberOfCodeBlocks, 498 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 701 ConstructedInterpolants, 31 QuantifiedInterpolants, 181117 SizeOfPredicates, 52 NumberOfNonLiveVariables, 937 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 133/207 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...