./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-01-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7feccaf382e9f358fe7bd48bccc9b98dfa2aebd ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: no XNF --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 05:12:40,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 05:12:40,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 05:12:40,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 05:12:40,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 05:12:40,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 05:12:40,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 05:12:40,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 05:12:40,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 05:12:40,204 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 05:12:40,205 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 05:12:40,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 05:12:40,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 05:12:40,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 05:12:40,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 05:12:40,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 05:12:40,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 05:12:40,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 05:12:40,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 05:12:40,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 05:12:40,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 05:12:40,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 05:12:40,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 05:12:40,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 05:12:40,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 05:12:40,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 05:12:40,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 05:12:40,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 05:12:40,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 05:12:40,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 05:12:40,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 05:12:40,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 05:12:40,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 05:12:40,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 05:12:40,244 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 05:12:40,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 05:12:40,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 05:12:40,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 05:12:40,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 05:12:40,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 05:12:40,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 05:12:40,250 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2019-11-20 05:12:40,277 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 05:12:40,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 05:12:40,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 05:12:40,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 05:12:40,278 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 05:12:40,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 05:12:40,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 05:12:40,279 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 05:12:40,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 05:12:40,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 05:12:40,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 05:12:40,280 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 05:12:40,280 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 05:12:40,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 05:12:40,280 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 05:12:40,280 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 05:12:40,281 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 05:12:40,281 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 05:12:40,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 05:12:40,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 05:12:40,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 05:12:40,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 05:12:40,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:12:40,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 05:12:40,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 05:12:40,282 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 05:12:40,282 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 05:12:40,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 05:12:40,283 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) 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 -> b7feccaf382e9f358fe7bd48bccc9b98dfa2aebd [2019-11-20 05:12:40,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 05:12:40,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 05:12:40,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 05:12:40,472 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 05:12:40,472 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 05:12:40,473 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/../../sv-benchmarks/c/forester-heap/dll-01-1.i [2019-11-20 05:12:40,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/data/b16906f1f/31b47f474d974b4798d73e1b1c13c5f5/FLAG59f730ce4 [2019-11-20 05:12:41,029 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 05:12:41,029 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/sv-benchmarks/c/forester-heap/dll-01-1.i [2019-11-20 05:12:41,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/data/b16906f1f/31b47f474d974b4798d73e1b1c13c5f5/FLAG59f730ce4 [2019-11-20 05:12:41,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/data/b16906f1f/31b47f474d974b4798d73e1b1c13c5f5 [2019-11-20 05:12:41,547 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 05:12:41,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 05:12:41,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 05:12:41,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 05:12:41,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 05:12:41,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:12:41" (1/1) ... [2019-11-20 05:12:41,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@615780b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:41, skipping insertion in model container [2019-11-20 05:12:41,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:12:41" (1/1) ... [2019-11-20 05:12:41,569 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 05:12:41,619 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 05:12:41,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:12:41,996 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 05:12:42,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 05:12:42,137 INFO L192 MainTranslator]: Completed translation [2019-11-20 05:12:42,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42 WrapperNode [2019-11-20 05:12:42,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 05:12:42,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 05:12:42,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 05:12:42,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 05:12:42,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,174 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... [2019-11-20 05:12:42,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 05:12:42,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 05:12:42,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 05:12:42,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 05:12:42,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 05:12:42,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 05:12:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 05:12:42,271 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 05:12:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 05:12:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 05:12:42,271 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 05:12:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 05:12:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 05:12:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 05:12:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 05:12:42,272 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 05:12:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 05:12:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 05:12:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 05:12:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 05:12:42,273 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 05:12:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 05:12:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 05:12:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 05:12:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 05:12:42,274 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 05:12:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 05:12:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 05:12:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 05:12:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 05:12:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 05:12:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 05:12:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 05:12:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 05:12:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 05:12:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 05:12:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 05:12:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 05:12:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 05:12:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 05:12:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 05:12:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 05:12:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 05:12:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 05:12:42,278 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 05:12:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 05:12:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 05:12:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 05:12:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 05:12:42,279 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 05:12:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 05:12:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 05:12:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 05:12:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 05:12:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 05:12:42,280 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 05:12:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 05:12:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 05:12:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 05:12:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 05:12:42,281 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 05:12:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 05:12:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 05:12:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 05:12:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 05:12:42,282 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 05:12:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 05:12:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 05:12:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 05:12:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 05:12:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 05:12:42,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 05:12:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 05:12:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 05:12:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 05:12:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 05:12:42,284 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 05:12:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 05:12:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 05:12:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 05:12:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 05:12:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 05:12:42,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 05:12:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 05:12:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 05:12:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 05:12:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 05:12:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 05:12:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 05:12:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 05:12:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 05:12:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 05:12:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 05:12:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 05:12:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 05:12:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 05:12:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 05:12:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 05:12:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 05:12:42,288 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 05:12:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 05:12:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 05:12:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 05:12:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 05:12:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 05:12:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 05:12:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 05:12:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 05:12:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 05:12:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 05:12:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 05:12:42,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 05:12:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 05:12:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 05:12:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 05:12:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 05:12:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 05:12:42,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 05:12:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 05:12:42,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 05:12:43,300 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 05:12:43,300 INFO L285 CfgBuilder]: Removed 30 assume(true) statements. [2019-11-20 05:12:43,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:12:43 BoogieIcfgContainer [2019-11-20 05:12:43,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 05:12:43,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 05:12:43,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 05:12:43,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 05:12:43,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:12:41" (1/3) ... [2019-11-20 05:12:43,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db31b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:12:43, skipping insertion in model container [2019-11-20 05:12:43,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:12:42" (2/3) ... [2019-11-20 05:12:43,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7db31b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:12:43, skipping insertion in model container [2019-11-20 05:12:43,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:12:43" (3/3) ... [2019-11-20 05:12:43,314 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2019-11-20 05:12:43,324 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 05:12:43,331 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 71 error locations. [2019-11-20 05:12:43,342 INFO L249 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2019-11-20 05:12:43,366 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 05:12:43,369 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 05:12:43,370 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 05:12:43,370 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 05:12:43,370 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 05:12:43,370 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 05:12:43,370 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 05:12:43,371 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 05:12:43,404 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states. [2019-11-20 05:12:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 05:12:43,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:43,420 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:43,421 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash 703367874, now seen corresponding path program 1 times [2019-11-20 05:12:43,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:43,450 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [481210930] [2019-11-20 05:12:43,450 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:43,667 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:12:43,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:43,729 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:43,731 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:43,738 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:43,738 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:43,739 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:12:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:43,749 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:43,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:43,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481210930] [2019-11-20 05:12:43,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:43,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 05:12:43,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725519132] [2019-11-20 05:12:43,770 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:12:43,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:43,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:12:43,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:12:43,783 INFO L87 Difference]: Start difference. First operand 173 states. Second operand 3 states. [2019-11-20 05:12:44,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:44,174 INFO L93 Difference]: Finished difference Result 173 states and 183 transitions. [2019-11-20 05:12:44,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:12:44,176 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-20 05:12:44,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:44,188 INFO L225 Difference]: With dead ends: 173 [2019-11-20 05:12:44,189 INFO L226 Difference]: Without dead ends: 169 [2019-11-20 05:12:44,191 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:12:44,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2019-11-20 05:12:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 164. [2019-11-20 05:12:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2019-11-20 05:12:44,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 176 transitions. [2019-11-20 05:12:44,268 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 176 transitions. Word has length 7 [2019-11-20 05:12:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:44,269 INFO L462 AbstractCegarLoop]: Abstraction has 164 states and 176 transitions. [2019-11-20 05:12:44,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:12:44,269 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 176 transitions. [2019-11-20 05:12:44,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-20 05:12:44,270 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:44,270 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:44,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:44,485 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:44,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:44,486 INFO L82 PathProgramCache]: Analyzing trace with hash 703367875, now seen corresponding path program 1 times [2019-11-20 05:12:44,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:44,488 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1598124738] [2019-11-20 05:12:44,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:44,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:12:44,680 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:44,688 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:44,688 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:44,695 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:44,695 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:44,695 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:12:44,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:44,708 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:44,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:44,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1598124738] [2019-11-20 05:12:44,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:44,741 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 05:12:44,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984561600] [2019-11-20 05:12:44,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:12:44,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:44,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:12:44,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:12:44,744 INFO L87 Difference]: Start difference. First operand 164 states and 176 transitions. Second operand 4 states. [2019-11-20 05:12:45,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:45,174 INFO L93 Difference]: Finished difference Result 187 states and 198 transitions. [2019-11-20 05:12:45,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:12:45,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-20 05:12:45,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:45,177 INFO L225 Difference]: With dead ends: 187 [2019-11-20 05:12:45,178 INFO L226 Difference]: Without dead ends: 187 [2019-11-20 05:12:45,178 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:12:45,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2019-11-20 05:12:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 173. [2019-11-20 05:12:45,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-11-20 05:12:45,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 193 transitions. [2019-11-20 05:12:45,191 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 193 transitions. Word has length 7 [2019-11-20 05:12:45,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:45,191 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 193 transitions. [2019-11-20 05:12:45,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:12:45,192 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 193 transitions. [2019-11-20 05:12:45,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 05:12:45,193 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:45,193 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:45,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:45,398 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash 560126446, now seen corresponding path program 1 times [2019-11-20 05:12:45,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:45,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [305096733] [2019-11-20 05:12:45,400 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:45,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:45,612 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:12:45,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:45,654 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:45,655 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-11-20 05:12:45,658 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:45,679 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:12:45,680 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:45,680 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:11 [2019-11-20 05:12:45,706 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:45,706 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:45,715 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:45,716 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:45,716 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:19 [2019-11-20 05:12:45,747 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2019-11-20 05:12:45,748 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:45,754 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:45,755 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:12:45,755 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:13 [2019-11-20 05:12:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:45,781 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:45,823 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [305096733] [2019-11-20 05:12:45,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:45,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2019-11-20 05:12:45,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444995265] [2019-11-20 05:12:45,824 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:12:45,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:45,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:12:45,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:12:45,825 INFO L87 Difference]: Start difference. First operand 173 states and 193 transitions. Second operand 8 states. [2019-11-20 05:12:46,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:46,960 INFO L93 Difference]: Finished difference Result 301 states and 327 transitions. [2019-11-20 05:12:46,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:12:46,961 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-20 05:12:46,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:46,963 INFO L225 Difference]: With dead ends: 301 [2019-11-20 05:12:46,963 INFO L226 Difference]: Without dead ends: 301 [2019-11-20 05:12:46,964 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:12:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-20 05:12:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 172. [2019-11-20 05:12:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-20 05:12:46,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2019-11-20 05:12:46,978 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 14 [2019-11-20 05:12:46,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:46,978 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2019-11-20 05:12:46,978 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:12:46,978 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2019-11-20 05:12:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-20 05:12:46,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:46,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:47,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:47,191 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash 560126447, now seen corresponding path program 1 times [2019-11-20 05:12:47,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:47,192 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [802527241] [2019-11-20 05:12:47,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:47,359 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:12:47,360 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:47,370 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:47,370 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,380 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:47,380 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,381 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:12:47,410 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:47,410 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,426 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:47,432 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:47,433 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,446 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:47,447 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,448 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:34, output treesize:23 [2019-11-20 05:12:47,480 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-20 05:12:47,481 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,497 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:47,510 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-20 05:12:47,510 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,515 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:47,516 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:47,516 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:41, output treesize:9 [2019-11-20 05:12:47,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:47,533 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:47,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:47,713 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [802527241] [2019-11-20 05:12:47,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:47,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 05:12:47,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302119902] [2019-11-20 05:12:47,714 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:12:47,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:47,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:12:47,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:12:47,714 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand 8 states. [2019-11-20 05:12:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:49,282 INFO L93 Difference]: Finished difference Result 321 states and 360 transitions. [2019-11-20 05:12:49,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:12:49,285 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2019-11-20 05:12:49,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:49,286 INFO L225 Difference]: With dead ends: 321 [2019-11-20 05:12:49,286 INFO L226 Difference]: Without dead ends: 321 [2019-11-20 05:12:49,287 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:12:49,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-11-20 05:12:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 171. [2019-11-20 05:12:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2019-11-20 05:12:49,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 191 transitions. [2019-11-20 05:12:49,297 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 191 transitions. Word has length 14 [2019-11-20 05:12:49,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:49,297 INFO L462 AbstractCegarLoop]: Abstraction has 171 states and 191 transitions. [2019-11-20 05:12:49,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:12:49,297 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 191 transitions. [2019-11-20 05:12:49,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 05:12:49,298 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:49,298 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:49,500 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:49,501 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:49,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:49,501 INFO L82 PathProgramCache]: Analyzing trace with hash 779019778, now seen corresponding path program 1 times [2019-11-20 05:12:49,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:49,502 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [757537397] [2019-11-20 05:12:49,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:49,689 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 05:12:49,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:49,697 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:49,697 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,699 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,700 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,700 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:12:49,709 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_81|], 1=[|v_#valid_106|]} [2019-11-20 05:12:49,713 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:49,713 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,723 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,731 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,732 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-20 05:12:49,732 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,739 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,739 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,739 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:22, output treesize:13 [2019-11-20 05:12:49,759 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:49,759 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,784 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,790 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:49,790 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,807 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,807 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,808 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:38, output treesize:33 [2019-11-20 05:12:49,899 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,900 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 72 [2019-11-20 05:12:49,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:12:49,904 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,947 INFO L567 ElimStorePlain]: treesize reduction 26, result has 72.6 percent of original size [2019-11-20 05:12:49,952 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2019-11-20 05:12:49,953 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:49,967 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:49,968 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:12:49,968 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:79, output treesize:59 [2019-11-20 05:12:50,052 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:50,053 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 42 [2019-11-20 05:12:50,054 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:50,084 INFO L567 ElimStorePlain]: treesize reduction 14, result has 71.4 percent of original size [2019-11-20 05:12:50,087 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2019-11-20 05:12:50,088 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:50,095 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:50,096 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:50,096 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:77, output treesize:9 [2019-11-20 05:12:50,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:50,113 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:51,300 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:51,744 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-11-20 05:12:51,745 INFO L567 ElimStorePlain]: treesize reduction 12, result has 91.7 percent of original size [2019-11-20 05:12:51,754 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:51,932 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-20 05:12:51,932 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:51,942 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:52,195 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2019-11-20 05:12:52,195 INFO L567 ElimStorePlain]: treesize reduction 56, result has 61.9 percent of original size [2019-11-20 05:12:52,204 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:52,466 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-11-20 05:12:52,467 INFO L567 ElimStorePlain]: treesize reduction 12, result has 84.8 percent of original size [2019-11-20 05:12:52,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:12:52,469 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 4 dim-2 vars, End of recursive call: and 4 xjuncts. [2019-11-20 05:12:52,469 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:190, output treesize:34 [2019-11-20 05:12:52,583 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2019-11-20 05:12:52,586 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:52,590 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:52,590 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:52,591 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:10 [2019-11-20 05:12:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:52,623 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [757537397] [2019-11-20 05:12:52,623 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:52,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2019-11-20 05:12:52,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022043652] [2019-11-20 05:12:52,624 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 05:12:52,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:52,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 05:12:52,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-11-20 05:12:52,625 INFO L87 Difference]: Start difference. First operand 171 states and 191 transitions. Second operand 14 states. [2019-11-20 05:12:55,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:55,601 INFO L93 Difference]: Finished difference Result 301 states and 327 transitions. [2019-11-20 05:12:55,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-20 05:12:55,601 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2019-11-20 05:12:55,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:55,603 INFO L225 Difference]: With dead ends: 301 [2019-11-20 05:12:55,603 INFO L226 Difference]: Without dead ends: 301 [2019-11-20 05:12:55,604 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2019-11-20 05:12:55,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2019-11-20 05:12:55,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 170. [2019-11-20 05:12:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2019-11-20 05:12:55,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 190 transitions. [2019-11-20 05:12:55,616 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 190 transitions. Word has length 17 [2019-11-20 05:12:55,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:55,616 INFO L462 AbstractCegarLoop]: Abstraction has 170 states and 190 transitions. [2019-11-20 05:12:55,616 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 05:12:55,616 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 190 transitions. [2019-11-20 05:12:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-20 05:12:55,617 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:55,617 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:55,817 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:55,818 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:55,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:55,818 INFO L82 PathProgramCache]: Analyzing trace with hash 779019777, now seen corresponding path program 1 times [2019-11-20 05:12:55,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:55,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [265875379] [2019-11-20 05:12:55,819 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:56,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:56,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 05:12:56,011 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:56,015 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:56,015 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,018 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:56,018 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,018 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:12:56,050 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:56,051 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-20 05:12:56,052 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,067 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 05:12:56,067 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,068 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2019-11-20 05:12:56,086 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:56,087 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,099 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:56,099 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,099 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:29 [2019-11-20 05:12:56,163 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:56,164 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 59 [2019-11-20 05:12:56,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:12:56,165 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,191 INFO L567 ElimStorePlain]: treesize reduction 26, result has 61.8 percent of original size [2019-11-20 05:12:56,192 INFO L496 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. [2019-11-20 05:12:56,192 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:52, output treesize:42 [2019-11-20 05:12:56,251 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:56,251 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 33 [2019-11-20 05:12:56,252 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,276 INFO L567 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2019-11-20 05:12:56,277 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:12:56,278 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:17 [2019-11-20 05:12:56,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:56,312 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:56,419 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:56,439 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:56,440 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:12:56,440 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-20 05:12:56,441 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:39, output treesize:20 [2019-11-20 05:12:56,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:56,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [265875379] [2019-11-20 05:12:56,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:56,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2019-11-20 05:12:56,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036038448] [2019-11-20 05:12:56,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 05:12:56,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:56,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 05:12:56,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2019-11-20 05:12:56,496 INFO L87 Difference]: Start difference. First operand 170 states and 190 transitions. Second operand 14 states. [2019-11-20 05:12:57,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:57,677 INFO L93 Difference]: Finished difference Result 298 states and 324 transitions. [2019-11-20 05:12:57,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 05:12:57,678 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2019-11-20 05:12:57,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:57,679 INFO L225 Difference]: With dead ends: 298 [2019-11-20 05:12:57,679 INFO L226 Difference]: Without dead ends: 298 [2019-11-20 05:12:57,680 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2019-11-20 05:12:57,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2019-11-20 05:12:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 169. [2019-11-20 05:12:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2019-11-20 05:12:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 189 transitions. [2019-11-20 05:12:57,686 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 189 transitions. Word has length 17 [2019-11-20 05:12:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:57,686 INFO L462 AbstractCegarLoop]: Abstraction has 169 states and 189 transitions. [2019-11-20 05:12:57,686 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 05:12:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 189 transitions. [2019-11-20 05:12:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 05:12:57,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:57,687 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:57,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:57,890 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:57,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:57,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1483947616, now seen corresponding path program 1 times [2019-11-20 05:12:57,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:57,891 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1582744563] [2019-11-20 05:12:57,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:58,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:12:58,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:58,055 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:58,055 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,079 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:58,084 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:12:58,084 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,098 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:58,099 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,099 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:19 [2019-11-20 05:12:58,119 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-20 05:12:58,120 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,134 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:58,137 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2019-11-20 05:12:58,138 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,145 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:58,146 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,146 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:37, output treesize:7 [2019-11-20 05:12:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:58,165 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:58,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:12:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:58,171 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1582744563] [2019-11-20 05:12:58,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:58,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 05:12:58,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380682169] [2019-11-20 05:12:58,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 05:12:58,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:58,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 05:12:58,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:12:58,172 INFO L87 Difference]: Start difference. First operand 169 states and 189 transitions. Second operand 5 states. [2019-11-20 05:12:58,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:58,549 INFO L93 Difference]: Finished difference Result 246 states and 271 transitions. [2019-11-20 05:12:58,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:12:58,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-11-20 05:12:58,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:58,551 INFO L225 Difference]: With dead ends: 246 [2019-11-20 05:12:58,551 INFO L226 Difference]: Without dead ends: 246 [2019-11-20 05:12:58,551 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-11-20 05:12:58,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2019-11-20 05:12:58,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 172. [2019-11-20 05:12:58,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-20 05:12:58,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 192 transitions. [2019-11-20 05:12:58,557 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 192 transitions. Word has length 20 [2019-11-20 05:12:58,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:58,557 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 192 transitions. [2019-11-20 05:12:58,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 05:12:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 192 transitions. [2019-11-20 05:12:58,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 05:12:58,558 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:58,558 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:58,760 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:58,761 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:58,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:58,761 INFO L82 PathProgramCache]: Analyzing trace with hash -357456453, now seen corresponding path program 1 times [2019-11-20 05:12:58,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:58,762 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1036475679] [2019-11-20 05:12:58,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:58,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 05:12:58,909 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:58,914 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:58,915 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,916 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:58,917 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,917 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:12:58,938 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:58,939 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-11-20 05:12:58,939 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:58,952 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:12:58,953 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:12:58,953 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 05:12:58,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:58,959 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:58,984 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1036475679] [2019-11-20 05:12:58,984 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:12:58,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:12:58,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42682533] [2019-11-20 05:12:58,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 05:12:58,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:12:58,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 05:12:58,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 05:12:58,985 INFO L87 Difference]: Start difference. First operand 172 states and 192 transitions. Second operand 4 states. [2019-11-20 05:12:59,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:12:59,265 INFO L93 Difference]: Finished difference Result 173 states and 190 transitions. [2019-11-20 05:12:59,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 05:12:59,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-11-20 05:12:59,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:12:59,267 INFO L225 Difference]: With dead ends: 173 [2019-11-20 05:12:59,267 INFO L226 Difference]: Without dead ends: 173 [2019-11-20 05:12:59,267 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 05:12:59,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-20 05:12:59,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 162. [2019-11-20 05:12:59,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2019-11-20 05:12:59,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2019-11-20 05:12:59,272 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 22 [2019-11-20 05:12:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:12:59,272 INFO L462 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2019-11-20 05:12:59,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 05:12:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2019-11-20 05:12:59,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 05:12:59,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:12:59,273 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:12:59,475 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:59,476 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:12:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:12:59,476 INFO L82 PathProgramCache]: Analyzing trace with hash -357456452, now seen corresponding path program 1 times [2019-11-20 05:12:59,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:12:59,477 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1498855214] [2019-11-20 05:12:59,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:12:59,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:12:59,642 INFO L255 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 05:12:59,643 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:12:59,649 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:59,649 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:59,655 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:59,658 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:12:59,658 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:59,663 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:59,664 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:12:59,664 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 05:12:59,693 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:12:59,693 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 16 [2019-11-20 05:12:59,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:59,703 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:59,711 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:59,711 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-20 05:12:59,711 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:12:59,721 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:12:59,722 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:12:59,722 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-20 05:12:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:12:59,738 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:12:59,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:13:00,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:00,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1498855214] [2019-11-20 05:13:00,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:00,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 05:13:00,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977055168] [2019-11-20 05:13:00,100 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:13:00,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:00,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:13:00,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:13:00,101 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand 8 states. [2019-11-20 05:13:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:01,629 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2019-11-20 05:13:01,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 05:13:01,630 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-20 05:13:01,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:01,631 INFO L225 Difference]: With dead ends: 212 [2019-11-20 05:13:01,631 INFO L226 Difference]: Without dead ends: 212 [2019-11-20 05:13:01,632 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2019-11-20 05:13:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2019-11-20 05:13:01,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 175. [2019-11-20 05:13:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2019-11-20 05:13:01,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 202 transitions. [2019-11-20 05:13:01,638 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 202 transitions. Word has length 22 [2019-11-20 05:13:01,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:01,638 INFO L462 AbstractCegarLoop]: Abstraction has 175 states and 202 transitions. [2019-11-20 05:13:01,638 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:13:01,638 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 202 transitions. [2019-11-20 05:13:01,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 05:13:01,639 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:01,639 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:13:01,840 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:01,840 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:01,841 INFO L82 PathProgramCache]: Analyzing trace with hash 81734366, now seen corresponding path program 1 times [2019-11-20 05:13:01,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:01,843 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [292057698] [2019-11-20 05:13:01,843 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:02,003 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 05:13:02,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:02,026 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:02,026 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-11-20 05:13:02,027 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:02,039 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 05:13:02,039 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:13:02,039 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-20 05:13:02,050 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:02,050 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:02,055 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:02,055 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:02,055 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:11 [2019-11-20 05:13:02,070 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-20 05:13:02,071 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:02,073 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:02,073 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:02,073 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:5 [2019-11-20 05:13:02,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:02,083 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:02,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:02,092 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [292057698] [2019-11-20 05:13:02,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:02,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2019-11-20 05:13:02,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349343383] [2019-11-20 05:13:02,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 05:13:02,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:02,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 05:13:02,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 05:13:02,093 INFO L87 Difference]: Start difference. First operand 175 states and 202 transitions. Second operand 6 states. [2019-11-20 05:13:02,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:02,703 INFO L93 Difference]: Finished difference Result 257 states and 296 transitions. [2019-11-20 05:13:02,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 05:13:02,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-11-20 05:13:02,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:02,705 INFO L225 Difference]: With dead ends: 257 [2019-11-20 05:13:02,705 INFO L226 Difference]: Without dead ends: 257 [2019-11-20 05:13:02,705 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:13:02,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2019-11-20 05:13:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 174. [2019-11-20 05:13:02,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2019-11-20 05:13:02,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 201 transitions. [2019-11-20 05:13:02,710 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 201 transitions. Word has length 24 [2019-11-20 05:13:02,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:02,711 INFO L462 AbstractCegarLoop]: Abstraction has 174 states and 201 transitions. [2019-11-20 05:13:02,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 05:13:02,711 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 201 transitions. [2019-11-20 05:13:02,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-20 05:13:02,712 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:02,712 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 05:13:02,912 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:02,912 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:02,913 INFO L82 PathProgramCache]: Analyzing trace with hash 81734367, now seen corresponding path program 1 times [2019-11-20 05:13:02,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:02,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1936934038] [2019-11-20 05:13:02,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:03,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:03,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 05:13:03,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:03,081 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:13:03,081 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,106 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:03,106 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,107 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:13:03,119 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:03,119 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,129 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:03,133 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:03,133 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,141 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:03,142 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,142 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:28, output treesize:19 [2019-11-20 05:13:03,159 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-20 05:13:03,160 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,167 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:03,169 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:13:03,169 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,174 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:03,174 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:03,174 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:33, output treesize:11 [2019-11-20 05:13:03,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:03,184 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:03,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:03,317 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1936934038] [2019-11-20 05:13:03,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:03,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 05:13:03,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733616436] [2019-11-20 05:13:03,317 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 05:13:03,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:03,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 05:13:03,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 05:13:03,318 INFO L87 Difference]: Start difference. First operand 174 states and 201 transitions. Second operand 8 states. [2019-11-20 05:13:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:04,410 INFO L93 Difference]: Finished difference Result 277 states and 327 transitions. [2019-11-20 05:13:04,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 05:13:04,411 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-11-20 05:13:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:04,412 INFO L225 Difference]: With dead ends: 277 [2019-11-20 05:13:04,412 INFO L226 Difference]: Without dead ends: 277 [2019-11-20 05:13:04,412 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2019-11-20 05:13:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2019-11-20 05:13:04,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 173. [2019-11-20 05:13:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-11-20 05:13:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 200 transitions. [2019-11-20 05:13:04,417 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 200 transitions. Word has length 24 [2019-11-20 05:13:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:04,418 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 200 transitions. [2019-11-20 05:13:04,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 05:13:04,418 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 200 transitions. [2019-11-20 05:13:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 05:13:04,419 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:04,419 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:13:04,619 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:04,619 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:04,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:04,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1259149065, now seen corresponding path program 1 times [2019-11-20 05:13:04,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:04,620 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1844505860] [2019-11-20 05:13:04,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:04,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 05:13:04,738 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:04,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:04,746 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:04,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:04,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1844505860] [2019-11-20 05:13:04,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:04,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 05:13:04,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47644779] [2019-11-20 05:13:04,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 05:13:04,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:04,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 05:13:04,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:13:04,752 INFO L87 Difference]: Start difference. First operand 173 states and 200 transitions. Second operand 3 states. [2019-11-20 05:13:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:04,871 INFO L93 Difference]: Finished difference Result 181 states and 208 transitions. [2019-11-20 05:13:04,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 05:13:04,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2019-11-20 05:13:04,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:04,872 INFO L225 Difference]: With dead ends: 181 [2019-11-20 05:13:04,872 INFO L226 Difference]: Without dead ends: 181 [2019-11-20 05:13:04,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 05:13:04,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2019-11-20 05:13:04,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 173. [2019-11-20 05:13:04,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2019-11-20 05:13:04,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 199 transitions. [2019-11-20 05:13:04,877 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 199 transitions. Word has length 28 [2019-11-20 05:13:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:04,877 INFO L462 AbstractCegarLoop]: Abstraction has 173 states and 199 transitions. [2019-11-20 05:13:04,877 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 05:13:04,877 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 199 transitions. [2019-11-20 05:13:04,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 05:13:04,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:04,878 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:13:05,080 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:05,080 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:05,081 INFO L82 PathProgramCache]: Analyzing trace with hash -644679328, now seen corresponding path program 1 times [2019-11-20 05:13:05,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:05,081 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [172259986] [2019-11-20 05:13:05,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:05,254 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 05:13:05,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:05,259 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:13:05,259 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,266 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,266 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,267 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:13:05,289 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,290 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-11-20 05:13:05,290 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,305 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 05:13:05,306 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,306 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:15 [2019-11-20 05:13:05,319 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:05,319 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,327 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,328 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,328 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:27 [2019-11-20 05:13:05,401 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,401 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 59 [2019-11-20 05:13:05,402 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:05,403 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,415 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,415 INFO L496 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. [2019-11-20 05:13:05,415 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:48, output treesize:40 [2019-11-20 05:13:05,456 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,456 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2019-11-20 05:13:05,456 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:05,462 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:05,463 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:13:05,463 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:47, output treesize:19 [2019-11-20 05:13:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:05,540 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:05,651 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [172259986] [2019-11-20 05:13:05,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:05,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2019-11-20 05:13:05,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047466381] [2019-11-20 05:13:05,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 05:13:05,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:05,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 05:13:05,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-11-20 05:13:05,653 INFO L87 Difference]: Start difference. First operand 173 states and 199 transitions. Second operand 14 states. [2019-11-20 05:13:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:06,783 INFO L93 Difference]: Finished difference Result 262 states and 293 transitions. [2019-11-20 05:13:06,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-20 05:13:06,784 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2019-11-20 05:13:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:06,785 INFO L225 Difference]: With dead ends: 262 [2019-11-20 05:13:06,785 INFO L226 Difference]: Without dead ends: 262 [2019-11-20 05:13:06,786 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=169, Invalid=383, Unknown=0, NotChecked=0, Total=552 [2019-11-20 05:13:06,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-11-20 05:13:06,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 172. [2019-11-20 05:13:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2019-11-20 05:13:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 198 transitions. [2019-11-20 05:13:06,791 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 198 transitions. Word has length 28 [2019-11-20 05:13:06,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:06,791 INFO L462 AbstractCegarLoop]: Abstraction has 172 states and 198 transitions. [2019-11-20 05:13:06,791 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 05:13:06,791 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 198 transitions. [2019-11-20 05:13:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 05:13:06,792 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:06,792 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:13:06,992 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:06,993 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:06,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:06,993 INFO L82 PathProgramCache]: Analyzing trace with hash -644679327, now seen corresponding path program 1 times [2019-11-20 05:13:06,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:06,993 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [174680624] [2019-11-20 05:13:06,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:07,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 05:13:07,207 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:07,215 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:13:07,215 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,217 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,217 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,217 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 05:13:07,225 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_95|], 1=[|v_#valid_154|]} [2019-11-20 05:13:07,228 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:13:07,228 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,237 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,243 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,258 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-20 05:13:07,258 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,265 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,266 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,266 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13 [2019-11-20 05:13:07,282 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:07,283 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,294 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,297 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:07,297 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,306 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,306 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,306 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:27 [2019-11-20 05:13:07,371 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,371 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 72 [2019-11-20 05:13:07,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:13:07,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:07,373 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-20 05:13:07,429 INFO L567 ElimStorePlain]: treesize reduction 59, result has 50.4 percent of original size [2019-11-20 05:13:07,433 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 54 [2019-11-20 05:13:07,433 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,448 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,448 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:13:07,448 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:51 [2019-11-20 05:13:07,493 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,493 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 42 [2019-11-20 05:13:07,493 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,508 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,511 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 10 [2019-11-20 05:13:07,511 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,517 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:07,518 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:07,518 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:65, output treesize:9 [2019-11-20 05:13:07,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:07,551 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:10,346 WARN L191 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2019-11-20 05:13:13,044 WARN L191 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2019-11-20 05:13:13,084 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:13,294 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2019-11-20 05:13:13,295 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:13,307 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:13,535 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-20 05:13:13,536 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:13,543 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:15,301 WARN L191 SmtUtils]: Spent 1.76 s on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2019-11-20 05:13:15,301 INFO L567 ElimStorePlain]: treesize reduction 59, result has 62.4 percent of original size [2019-11-20 05:13:15,308 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:15,459 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2019-11-20 05:13:15,459 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:15,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:15,463 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:15,470 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:13:15,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:15,471 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:15,472 INFO L496 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 4 dim-2 vars, End of recursive call: 2 dim-0 vars, and 7 xjuncts. [2019-11-20 05:13:15,472 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:166, output treesize:63 [2019-11-20 05:13:15,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:15,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174680624] [2019-11-20 05:13:15,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:15,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2019-11-20 05:13:15,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854191869] [2019-11-20 05:13:15,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-20 05:13:15,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:15,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-20 05:13:15,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-11-20 05:13:15,609 INFO L87 Difference]: Start difference. First operand 172 states and 198 transitions. Second operand 16 states. [2019-11-20 05:13:17,454 WARN L191 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 41 [2019-11-20 05:13:17,708 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-11-20 05:13:20,062 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2019-11-20 05:13:23,952 WARN L191 SmtUtils]: Spent 3.44 s on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2019-11-20 05:13:25,219 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 39 [2019-11-20 05:13:26,251 WARN L191 SmtUtils]: Spent 576.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 49 [2019-11-20 05:13:27,217 WARN L191 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 54 [2019-11-20 05:13:27,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:27,321 INFO L93 Difference]: Finished difference Result 177 states and 202 transitions. [2019-11-20 05:13:27,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 05:13:27,322 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 28 [2019-11-20 05:13:27,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:27,323 INFO L225 Difference]: With dead ends: 177 [2019-11-20 05:13:27,323 INFO L226 Difference]: Without dead ends: 177 [2019-11-20 05:13:27,324 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=287, Invalid=705, Unknown=0, NotChecked=0, Total=992 [2019-11-20 05:13:27,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-11-20 05:13:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2019-11-20 05:13:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-11-20 05:13:27,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2019-11-20 05:13:27,328 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 28 [2019-11-20 05:13:27,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:27,328 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2019-11-20 05:13:27,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-20 05:13:27,328 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2019-11-20 05:13:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 05:13:27,329 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:27,329 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:13:27,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:27,530 INFO L410 AbstractCegarLoop]: === Iteration 15 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:27,530 INFO L82 PathProgramCache]: Analyzing trace with hash -872153978, now seen corresponding path program 1 times [2019-11-20 05:13:27,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:27,531 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1104196545] [2019-11-20 05:13:27,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:27,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 05:13:27,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:27,684 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:13:27,684 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:27,693 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:27,695 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:13:27,695 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:27,702 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:27,702 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:27,703 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:22 [2019-11-20 05:13:27,729 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:13:27,729 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:27,735 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:27,737 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 05:13:27,737 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:27,741 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:27,741 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:27,741 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2019-11-20 05:13:27,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:27,763 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:27,815 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1104196545] [2019-11-20 05:13:27,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:27,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 9 [2019-11-20 05:13:27,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403512417] [2019-11-20 05:13:27,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 05:13:27,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:27,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 05:13:27,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-20 05:13:27,816 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand 9 states. [2019-11-20 05:13:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:28,540 INFO L93 Difference]: Finished difference Result 262 states and 289 transitions. [2019-11-20 05:13:28,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 05:13:28,540 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2019-11-20 05:13:28,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:28,542 INFO L225 Difference]: With dead ends: 262 [2019-11-20 05:13:28,542 INFO L226 Difference]: Without dead ends: 262 [2019-11-20 05:13:28,542 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2019-11-20 05:13:28,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-11-20 05:13:28,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 178. [2019-11-20 05:13:28,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2019-11-20 05:13:28,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 205 transitions. [2019-11-20 05:13:28,548 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 205 transitions. Word has length 32 [2019-11-20 05:13:28,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:28,548 INFO L462 AbstractCegarLoop]: Abstraction has 178 states and 205 transitions. [2019-11-20 05:13:28,548 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 05:13:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 205 transitions. [2019-11-20 05:13:28,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 05:13:28,550 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:28,550 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:13:28,753 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:28,753 INFO L410 AbstractCegarLoop]: === Iteration 16 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:28,753 INFO L82 PathProgramCache]: Analyzing trace with hash -390377317, now seen corresponding path program 1 times [2019-11-20 05:13:28,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:28,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [846274195] [2019-11-20 05:13:28,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:28,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-20 05:13:28,942 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:28,950 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:28,950 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:28,958 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:28,960 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-20 05:13:28,960 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:28,966 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:28,966 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:28,967 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:18 [2019-11-20 05:13:28,981 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:28,981 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-20 05:13:28,982 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:28,996 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:28,999 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,000 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-20 05:13:29,000 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,011 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:29,011 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,011 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:36 [2019-11-20 05:13:29,036 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,037 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,038 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,039 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-11-20 05:13:29,039 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,062 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:29,065 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,066 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,067 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 05:13:29,068 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2019-11-20 05:13:29,068 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,085 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:29,085 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,085 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:54 [2019-11-20 05:13:29,166 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2019-11-20 05:13:29,166 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,176 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:29,182 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:29,183 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 13 [2019-11-20 05:13:29,183 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,193 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:29,194 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:29,194 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:57, output treesize:7 [2019-11-20 05:13:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:29,259 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:29,386 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [846274195] [2019-11-20 05:13:29,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 05:13:29,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 11 [2019-11-20 05:13:29,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594109353] [2019-11-20 05:13:29,387 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 05:13:29,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:29,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 05:13:29,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-20 05:13:29,388 INFO L87 Difference]: Start difference. First operand 178 states and 205 transitions. Second operand 11 states. [2019-11-20 05:13:30,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:13:30,554 INFO L93 Difference]: Finished difference Result 286 states and 311 transitions. [2019-11-20 05:13:30,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 05:13:30,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2019-11-20 05:13:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:13:30,556 INFO L225 Difference]: With dead ends: 286 [2019-11-20 05:13:30,556 INFO L226 Difference]: Without dead ends: 286 [2019-11-20 05:13:30,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 56 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2019-11-20 05:13:30,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2019-11-20 05:13:30,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 202. [2019-11-20 05:13:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2019-11-20 05:13:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 238 transitions. [2019-11-20 05:13:30,570 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 238 transitions. Word has length 34 [2019-11-20 05:13:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:13:30,570 INFO L462 AbstractCegarLoop]: Abstraction has 202 states and 238 transitions. [2019-11-20 05:13:30,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 05:13:30,570 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 238 transitions. [2019-11-20 05:13:30,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 05:13:30,571 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:13:30,571 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:13:30,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:30,774 INFO L410 AbstractCegarLoop]: === Iteration 17 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:13:30,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:13:30,775 INFO L82 PathProgramCache]: Analyzing trace with hash 572862994, now seen corresponding path program 1 times [2019-11-20 05:13:30,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:13:30,775 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [450272967] [2019-11-20 05:13:30,775 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:13:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:13:30,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 05:13:30,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:13:30,986 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:13:30,987 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:30,992 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:30,993 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:30,993 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:13:31,024 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:31,025 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 41 [2019-11-20 05:13:31,025 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:31,045 INFO L567 ElimStorePlain]: treesize reduction 14, result has 56.3 percent of original size [2019-11-20 05:13:31,045 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:31,045 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-11-20 05:13:31,062 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:13:31,062 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:31,072 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:31,073 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:13:31,073 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:32 [2019-11-20 05:13:31,141 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:31,141 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 59 [2019-11-20 05:13:31,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:13:31,142 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:31,143 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 3 xjuncts. [2019-11-20 05:13:31,177 INFO L567 ElimStorePlain]: treesize reduction 86, result has 34.8 percent of original size [2019-11-20 05:13:31,177 INFO L496 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. [2019-11-20 05:13:31,177 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:45 [2019-11-20 05:13:31,367 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2019-11-20 05:13:31,367 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:31,367 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 60 treesize of output 109 [2019-11-20 05:13:31,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:31,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:31,369 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:31,369 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-11-20 05:13:33,460 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 41 DAG size of output: 29 [2019-11-20 05:13:33,461 INFO L567 ElimStorePlain]: treesize reduction 190, result has 24.3 percent of original size [2019-11-20 05:13:33,461 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 05:13:33,461 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:70, output treesize:60 [2019-11-20 05:13:39,520 WARN L191 SmtUtils]: Spent 2.03 s on a formula simplification. DAG size of input: 30 DAG size of output: 26 [2019-11-20 05:13:39,576 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:39,576 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 35 [2019-11-20 05:13:39,576 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:39,601 INFO L567 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-11-20 05:13:39,602 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:13:39,602 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:45, output treesize:15 [2019-11-20 05:13:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:39,677 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:13:40,121 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:13:40,138 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:13:40,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:13:40,139 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-20 05:13:40,139 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:41, output treesize:20 [2019-11-20 05:13:40,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:13:40,211 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [450272967] [2019-11-20 05:13:40,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 05:13:40,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 20 [2019-11-20 05:13:40,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254990140] [2019-11-20 05:13:40,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-11-20 05:13:40,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 05:13:40,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-11-20 05:13:40,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=340, Unknown=2, NotChecked=0, Total=420 [2019-11-20 05:13:40,212 INFO L87 Difference]: Start difference. First operand 202 states and 238 transitions. Second operand 21 states. [2019-11-20 05:13:56,863 WARN L191 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2019-11-20 05:14:06,018 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-11-20 05:14:08,567 WARN L191 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2019-11-20 05:14:09,171 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 58 [2019-11-20 05:14:10,604 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2019-11-20 05:14:11,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 05:14:11,159 INFO L93 Difference]: Finished difference Result 407 states and 445 transitions. [2019-11-20 05:14:11,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-20 05:14:11,160 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2019-11-20 05:14:11,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 05:14:11,163 INFO L225 Difference]: With dead ends: 407 [2019-11-20 05:14:11,164 INFO L226 Difference]: Without dead ends: 407 [2019-11-20 05:14:11,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 50 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=353, Invalid=1120, Unknown=9, NotChecked=0, Total=1482 [2019-11-20 05:14:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2019-11-20 05:14:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 205. [2019-11-20 05:14:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-11-20 05:14:11,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 240 transitions. [2019-11-20 05:14:11,172 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 240 transitions. Word has length 36 [2019-11-20 05:14:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 05:14:11,173 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 240 transitions. [2019-11-20 05:14:11,173 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-11-20 05:14:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 240 transitions. [2019-11-20 05:14:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 05:14:11,174 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 05:14:11,174 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-20 05:14:11,377 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:14:11,378 INFO L410 AbstractCegarLoop]: === Iteration 18 === [mainErr51REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr69ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr70ENSURES_VIOLATIONMEMORY_LEAK, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr68ASSERT_VIOLATIONMEMORY_FREE, mainErr15REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr64ASSERT_VIOLATIONMEMORY_FREE, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr67ASSERT_VIOLATIONMEMORY_FREE, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr63ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr62ASSERT_VIOLATIONMEMORY_FREE, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION]=== [2019-11-20 05:14:11,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 05:14:11,378 INFO L82 PathProgramCache]: Analyzing trace with hash 572862995, now seen corresponding path program 1 times [2019-11-20 05:14:11,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 05:14:11,378 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [938944283] [2019-11-20 05:14:11,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86d39b11-0d6a-48a6-ab99-97d26871ea9f/bin/uautomizer/cvc4 Starting monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:14:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 05:14:11,602 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-20 05:14:11,604 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 05:14:11,609 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:14:11,609 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,613 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,613 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,613 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 05:14:11,620 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_99|], 1=[|v_#valid_173|]} [2019-11-20 05:14:11,623 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-20 05:14:11,623 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,633 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,640 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,640 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 17 [2019-11-20 05:14:11,640 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,660 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,661 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,661 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:25, output treesize:16 [2019-11-20 05:14:11,683 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:14:11,684 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,698 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,701 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-20 05:14:11,701 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,713 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,713 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,713 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:41, output treesize:36 [2019-11-20 05:14:11,779 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,779 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 72 [2019-11-20 05:14:11,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:11,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,820 INFO L567 ElimStorePlain]: treesize reduction 26, result has 72.9 percent of original size [2019-11-20 05:14:11,824 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 26 [2019-11-20 05:14:11,825 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:11,840 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,840 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:14:11,841 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:82, output treesize:60 [2019-11-20 05:14:11,945 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:11,946 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 94 [2019-11-20 05:14:11,946 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:12,020 INFO L567 ElimStorePlain]: treesize reduction 38, result has 74.7 percent of original size [2019-11-20 05:14:12,022 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 05:14:12,092 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:12,092 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 100 treesize of output 133 [2019-11-20 05:14:12,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:14:12,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:14:12,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,100 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,101 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,102 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,103 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,104 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:12,106 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 6 xjuncts. [2019-11-20 05:14:12,274 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 34 [2019-11-20 05:14:12,275 INFO L567 ElimStorePlain]: treesize reduction 1680, result has 5.9 percent of original size [2019-11-20 05:14:12,275 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 05:14:12,275 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:122, output treesize:104 [2019-11-20 05:14:12,688 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 05:14:12,703 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:12,703 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 40 [2019-11-20 05:14:12,704 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:12,754 INFO L567 ElimStorePlain]: treesize reduction 4, result has 91.5 percent of original size [2019-11-20 05:14:12,757 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 15 [2019-11-20 05:14:12,758 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:12,769 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 05:14:12,769 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 05:14:12,769 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:73, output treesize:15 [2019-11-20 05:14:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 05:14:12,909 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 05:14:13,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:14,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:14:14,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:14,400 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:14,401 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:21,479 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-11-20 05:14:24,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 05:14:24,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:14:24,168 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 05:14:24,184 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:24,197 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:24,199 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 05:14:24,199 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:24,202 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 05:14:24,203 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 05:14:24,547 WARN L191 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37 [2019-11-20 05:14:24,548 INFO L567 ElimStorePlain]: treesize reduction 330, result has 46.8 percent of original size [2019-11-20 05:14:24,748 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 05:14:24,749 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no XNF at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) 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:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 05:14:24,752 INFO L168 Benchmark]: Toolchain (without parser) took 103204.27 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 378.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -169.9 MB). Peak memory consumption was 208.7 MB. Max. memory is 11.5 GB. [2019-11-20 05:14:24,752 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:14:24,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 588.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-20 05:14:24,753 INFO L168 Benchmark]: Boogie Preprocessor took 79.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 05:14:24,753 INFO L168 Benchmark]: RCFGBuilder took 1083.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 11.5 GB. [2019-11-20 05:14:24,754 INFO L168 Benchmark]: TraceAbstraction took 101448.51 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 250.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -90.0 MB). Peak memory consumption was 160.6 MB. Max. memory is 11.5 GB. [2019-11-20 05:14:24,756 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 588.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -161.2 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1083.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.3 MB). Peak memory consumption was 81.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 101448.51 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 250.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -90.0 MB). Peak memory consumption was 160.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no XNF de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no XNF: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:244) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...