./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0521.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0521.i -s /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4c2cc876d6364c6c5ea5f864b435001ef8fd7394 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 07:58:03,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 07:58:03,106 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 07:58:03,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 07:58:03,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 07:58:03,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 07:58:03,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 07:58:03,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 07:58:03,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 07:58:03,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 07:58:03,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 07:58:03,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 07:58:03,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 07:58:03,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 07:58:03,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 07:58:03,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 07:58:03,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 07:58:03,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 07:58:03,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 07:58:03,153 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 07:58:03,157 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 07:58:03,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 07:58:03,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 07:58:03,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 07:58:03,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 07:58:03,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 07:58:03,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 07:58:03,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 07:58:03,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 07:58:03,167 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 07:58:03,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 07:58:03,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 07:58:03,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 07:58:03,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 07:58:03,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 07:58:03,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 07:58:03,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 07:58:03,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 07:58:03,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 07:58:03,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 07:58:03,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 07:58:03,173 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 07:58:03,196 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 07:58:03,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 07:58:03,197 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 07:58:03,197 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 07:58:03,197 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 07:58:03,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 07:58:03,198 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 07:58:03,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 07:58:03,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 07:58:03,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 07:58:03,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 07:58:03,199 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 07:58:03,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 07:58:03,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 07:58:03,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 07:58:03,199 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 07:58:03,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 07:58:03,200 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 07:58:03,200 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 07:58:03,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 07:58:03,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 07:58:03,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 07:58:03,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 07:58:03,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 07:58:03,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 07:58:03,201 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 07:58:03,201 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 07:58:03,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 07:58:03,202 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 07:58:03,202 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_b7161916-fdc8-4138-b1c6-042264d9b3d1/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 4c2cc876d6364c6c5ea5f864b435001ef8fd7394 [2019-11-20 07:58:03,342 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 07:58:03,356 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 07:58:03,358 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 07:58:03,361 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 07:58:03,362 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 07:58:03,362 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/../../sv-benchmarks/c/memsafety/test-0521.i [2019-11-20 07:58:03,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/data/ccf99edb6/321f30f4006d457fbc2f7d1a4accac31/FLAG64c69a539 [2019-11-20 07:58:03,915 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 07:58:03,916 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/sv-benchmarks/c/memsafety/test-0521.i [2019-11-20 07:58:03,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/data/ccf99edb6/321f30f4006d457fbc2f7d1a4accac31/FLAG64c69a539 [2019-11-20 07:58:04,428 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/data/ccf99edb6/321f30f4006d457fbc2f7d1a4accac31 [2019-11-20 07:58:04,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 07:58:04,432 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 07:58:04,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 07:58:04,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 07:58:04,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 07:58:04,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:04,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e10742b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04, skipping insertion in model container [2019-11-20 07:58:04,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:04,448 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 07:58:04,509 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 07:58:04,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:58:04,892 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 07:58:04,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 07:58:04,995 INFO L192 MainTranslator]: Completed translation [2019-11-20 07:58:04,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04 WrapperNode [2019-11-20 07:58:04,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 07:58:04,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 07:58:04,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 07:58:04,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 07:58:05,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... [2019-11-20 07:58:05,081 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 07:58:05,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 07:58:05,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 07:58:05,082 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 07:58:05,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 07:58:05,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 07:58:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 07:58:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 07:58:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-20 07:58:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-20 07:58:05,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-20 07:58:05,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 07:58:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 07:58:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 07:58:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 07:58:05,140 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 07:58:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 07:58:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 07:58:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 07:58:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 07:58:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 07:58:05,141 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 07:58:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 07:58:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 07:58:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 07:58:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 07:58:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 07:58:05,142 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 07:58:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 07:58:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 07:58:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 07:58:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-20 07:58:05,143 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-20 07:58:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-20 07:58:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 07:58:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 07:58:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 07:58:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 07:58:05,144 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 07:58:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 07:58:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 07:58:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 07:58:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 07:58:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 07:58:05,145 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 07:58:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 07:58:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 07:58:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 07:58:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 07:58:05,146 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 07:58:05,147 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 07:58:05,148 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 07:58:05,149 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 07:58:05,150 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 07:58:05,151 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 07:58:05,152 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 07:58:05,153 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 07:58:05,154 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 07:58:05,155 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 07:58:05,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 07:58:05,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 07:58:05,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 07:58:05,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 07:58:05,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 07:58:05,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 07:58:05,157 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 07:58:06,879 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 07:58:06,879 INFO L285 CfgBuilder]: Removed 8 assume(true) statements. [2019-11-20 07:58:06,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:06 BoogieIcfgContainer [2019-11-20 07:58:06,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 07:58:06,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 07:58:06,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 07:58:06,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 07:58:06,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:58:04" (1/3) ... [2019-11-20 07:58:06,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72811f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:06, skipping insertion in model container [2019-11-20 07:58:06,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:58:04" (2/3) ... [2019-11-20 07:58:06,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72811f18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:58:06, skipping insertion in model container [2019-11-20 07:58:06,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:58:06" (3/3) ... [2019-11-20 07:58:06,889 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0521.i [2019-11-20 07:58:06,898 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 07:58:06,908 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 152 error locations. [2019-11-20 07:58:06,927 INFO L249 AbstractCegarLoop]: Starting to check reachability of 152 error locations. [2019-11-20 07:58:06,948 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 07:58:06,949 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 07:58:06,949 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 07:58:06,949 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 07:58:06,949 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 07:58:06,949 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 07:58:06,949 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 07:58:06,949 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 07:58:06,971 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states. [2019-11-20 07:58:06,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:58:06,979 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:06,979 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:06,980 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:06,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:06,985 INFO L82 PathProgramCache]: Analyzing trace with hash -129339286, now seen corresponding path program 1 times [2019-11-20 07:58:06,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:06,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1109465557] [2019-11-20 07:58:06,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:07,206 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2019-11-20 07:58:07,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:07,228 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 07:58:07,228 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:07,248 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 07:58:07,249 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1109465557] [2019-11-20 07:58:07,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:07,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 07:58:07,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44372926] [2019-11-20 07:58:07,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-20 07:58:07,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:07,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-20 07:58:07,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 07:58:07,275 INFO L87 Difference]: Start difference. First operand 314 states. Second operand 2 states. [2019-11-20 07:58:07,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:07,337 INFO L93 Difference]: Finished difference Result 314 states and 340 transitions. [2019-11-20 07:58:07,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-20 07:58:07,338 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2019-11-20 07:58:07,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:07,366 INFO L225 Difference]: With dead ends: 314 [2019-11-20 07:58:07,366 INFO L226 Difference]: Without dead ends: 311 [2019-11-20 07:58:07,372 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-20 07:58:07,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2019-11-20 07:58:07,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2019-11-20 07:58:07,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2019-11-20 07:58:07,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 337 transitions. [2019-11-20 07:58:07,456 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 337 transitions. Word has length 9 [2019-11-20 07:58:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:07,457 INFO L462 AbstractCegarLoop]: Abstraction has 311 states and 337 transitions. [2019-11-20 07:58:07,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-20 07:58:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 337 transitions. [2019-11-20 07:58:07,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:58:07,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:07,458 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:07,660 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:07,662 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:07,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:07,662 INFO L82 PathProgramCache]: Analyzing trace with hash -129339224, now seen corresponding path program 1 times [2019-11-20 07:58:07,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:07,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [951691939] [2019-11-20 07:58:07,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:07,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 07:58:07,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:07,944 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 07:58:07,945 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:07,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:07,951 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:07,952 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 07:58:07,959 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 07:58:07,959 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:07,966 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 07:58:07,966 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [951691939] [2019-11-20 07:58:07,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:07,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 07:58:07,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877770134] [2019-11-20 07:58:07,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:58:07,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:58:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:58:07,969 INFO L87 Difference]: Start difference. First operand 311 states and 337 transitions. Second operand 3 states. [2019-11-20 07:58:08,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:08,796 INFO L93 Difference]: Finished difference Result 397 states and 432 transitions. [2019-11-20 07:58:08,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:08,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 07:58:08,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:08,799 INFO L225 Difference]: With dead ends: 397 [2019-11-20 07:58:08,799 INFO L226 Difference]: Without dead ends: 397 [2019-11-20 07:58:08,800 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 07:58:08,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2019-11-20 07:58:08,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 309. [2019-11-20 07:58:08,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2019-11-20 07:58:08,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 335 transitions. [2019-11-20 07:58:08,826 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 335 transitions. Word has length 9 [2019-11-20 07:58:08,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:08,826 INFO L462 AbstractCegarLoop]: Abstraction has 309 states and 335 transitions. [2019-11-20 07:58:08,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:58:08,826 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 335 transitions. [2019-11-20 07:58:08,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:58:08,827 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:08,827 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:09,029 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:09,031 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:09,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:09,031 INFO L82 PathProgramCache]: Analyzing trace with hash -129339223, now seen corresponding path program 1 times [2019-11-20 07:58:09,032 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:09,033 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [489113329] [2019-11-20 07:58:09,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:09,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:09,212 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 07:58:09,213 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:09,224 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 07:58:09,224 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:09,231 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:09,231 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:09,232 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 07:58:09,245 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 07:58:09,245 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:09,277 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 07:58:09,277 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [489113329] [2019-11-20 07:58:09,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:09,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 07:58:09,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471916102] [2019-11-20 07:58:09,278 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:58:09,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:09,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:58:09,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:58:09,279 INFO L87 Difference]: Start difference. First operand 309 states and 335 transitions. Second operand 4 states. [2019-11-20 07:58:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:10,940 INFO L93 Difference]: Finished difference Result 529 states and 577 transitions. [2019-11-20 07:58:10,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:10,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-20 07:58:10,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:10,943 INFO L225 Difference]: With dead ends: 529 [2019-11-20 07:58:10,943 INFO L226 Difference]: Without dead ends: 529 [2019-11-20 07:58:10,943 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 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 07:58:10,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2019-11-20 07:58:10,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 307. [2019-11-20 07:58:10,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2019-11-20 07:58:10,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 333 transitions. [2019-11-20 07:58:10,953 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 333 transitions. Word has length 9 [2019-11-20 07:58:10,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:10,953 INFO L462 AbstractCegarLoop]: Abstraction has 307 states and 333 transitions. [2019-11-20 07:58:10,954 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:58:10,954 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 333 transitions. [2019-11-20 07:58:10,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:58:10,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:10,954 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:11,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:11,157 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:11,157 INFO L82 PathProgramCache]: Analyzing trace with hash -129340347, now seen corresponding path program 1 times [2019-11-20 07:58:11,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:11,158 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1633190475] [2019-11-20 07:58:11,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:11,307 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-20 07:58:11,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:11,318 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 07:58:11,318 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:11,321 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:11,322 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:11,322 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 07:58:11,327 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 07:58:11,328 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:11,335 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 07:58:11,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1633190475] [2019-11-20 07:58:11,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:11,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 07:58:11,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702757619] [2019-11-20 07:58:11,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:58:11,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:11,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:58:11,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:58:11,337 INFO L87 Difference]: Start difference. First operand 307 states and 333 transitions. Second operand 3 states. [2019-11-20 07:58:11,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:11,766 INFO L93 Difference]: Finished difference Result 291 states and 317 transitions. [2019-11-20 07:58:11,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:11,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-20 07:58:11,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:11,768 INFO L225 Difference]: With dead ends: 291 [2019-11-20 07:58:11,768 INFO L226 Difference]: Without dead ends: 291 [2019-11-20 07:58:11,769 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 07:58:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2019-11-20 07:58:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2019-11-20 07:58:11,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-11-20 07:58:11,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 317 transitions. [2019-11-20 07:58:11,776 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 317 transitions. Word has length 9 [2019-11-20 07:58:11,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:11,776 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 317 transitions. [2019-11-20 07:58:11,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:58:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 317 transitions. [2019-11-20 07:58:11,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-20 07:58:11,777 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:11,777 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:11,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:11,980 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:11,980 INFO L82 PathProgramCache]: Analyzing trace with hash -129340346, now seen corresponding path program 1 times [2019-11-20 07:58:11,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:11,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1029501366] [2019-11-20 07:58:11,980 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:12,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 07:58:12,145 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:12,155 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 07:58:12,155 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:12,160 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:12,161 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:12,161 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 07:58:12,169 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 07:58:12,169 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:12,196 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 07:58:12,196 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1029501366] [2019-11-20 07:58:12,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:12,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 07:58:12,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523294864] [2019-11-20 07:58:12,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:58:12,197 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:12,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:58:12,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:58:12,198 INFO L87 Difference]: Start difference. First operand 291 states and 317 transitions. Second operand 4 states. [2019-11-20 07:58:12,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:12,972 INFO L93 Difference]: Finished difference Result 275 states and 301 transitions. [2019-11-20 07:58:12,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:12,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-20 07:58:12,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:12,974 INFO L225 Difference]: With dead ends: 275 [2019-11-20 07:58:12,974 INFO L226 Difference]: Without dead ends: 275 [2019-11-20 07:58:12,976 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 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 07:58:12,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2019-11-20 07:58:12,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 275. [2019-11-20 07:58:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-11-20 07:58:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2019-11-20 07:58:12,982 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 9 [2019-11-20 07:58:12,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:12,983 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2019-11-20 07:58:12,983 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:58:12,983 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2019-11-20 07:58:12,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 07:58:12,983 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:12,983 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:13,184 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:13,184 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:13,185 INFO L82 PathProgramCache]: Analyzing trace with hash 257978854, now seen corresponding path program 1 times [2019-11-20 07:58:13,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:13,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1372108152] [2019-11-20 07:58:13,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:13,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:13,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 07:58:13,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:13,348 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 07:58:13,348 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:13,354 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 07:58:13,355 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1372108152] [2019-11-20 07:58:13,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:13,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-20 07:58:13,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046943161] [2019-11-20 07:58:13,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:58:13,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:13,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:58:13,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:58:13,356 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 4 states. [2019-11-20 07:58:13,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:13,484 INFO L93 Difference]: Finished difference Result 672 states and 738 transitions. [2019-11-20 07:58:13,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 07:58:13,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 07:58:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:13,491 INFO L225 Difference]: With dead ends: 672 [2019-11-20 07:58:13,491 INFO L226 Difference]: Without dead ends: 672 [2019-11-20 07:58:13,491 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 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 07:58:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-11-20 07:58:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 279. [2019-11-20 07:58:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-11-20 07:58:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 306 transitions. [2019-11-20 07:58:13,498 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 306 transitions. Word has length 11 [2019-11-20 07:58:13,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:13,498 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 306 transitions. [2019-11-20 07:58:13,498 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:58:13,498 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 306 transitions. [2019-11-20 07:58:13,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 07:58:13,499 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:13,499 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:13,707 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:13,707 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:13,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:13,708 INFO L82 PathProgramCache]: Analyzing trace with hash -154107859, now seen corresponding path program 1 times [2019-11-20 07:58:13,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:13,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1147484668] [2019-11-20 07:58:13,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:13,864 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 07:58:13,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:13,896 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:13,896 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 07:58:13,897 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:13,912 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 07:58:13,912 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 07:58:13,913 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 07:58:13,921 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 07:58:13,921 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:13,934 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 07:58:13,934 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1147484668] [2019-11-20 07:58:13,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:13,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2019-11-20 07:58:13,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133449073] [2019-11-20 07:58:13,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:58:13,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:13,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:58:13,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:58:13,936 INFO L87 Difference]: Start difference. First operand 279 states and 306 transitions. Second operand 4 states. [2019-11-20 07:58:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:14,708 INFO L93 Difference]: Finished difference Result 350 states and 388 transitions. [2019-11-20 07:58:14,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 07:58:14,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 07:58:14,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:14,711 INFO L225 Difference]: With dead ends: 350 [2019-11-20 07:58:14,711 INFO L226 Difference]: Without dead ends: 350 [2019-11-20 07:58:14,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 07:58:14,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2019-11-20 07:58:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 277. [2019-11-20 07:58:14,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-11-20 07:58:14,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 304 transitions. [2019-11-20 07:58:14,721 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 304 transitions. Word has length 13 [2019-11-20 07:58:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:14,722 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 304 transitions. [2019-11-20 07:58:14,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:58:14,722 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 304 transitions. [2019-11-20 07:58:14,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-20 07:58:14,723 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:14,723 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:14,925 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:14,926 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:14,926 INFO L82 PathProgramCache]: Analyzing trace with hash -154107858, now seen corresponding path program 1 times [2019-11-20 07:58:14,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:14,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1051111897] [2019-11-20 07:58:14,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:15,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:15,104 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 07:58:15,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:15,118 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 07:58:15,118 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:15,124 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:15,125 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:15,125 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 07:58:15,138 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 07:58:15,138 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:15,177 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 07:58:15,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1051111897] [2019-11-20 07:58:15,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:15,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 07:58:15,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307998432] [2019-11-20 07:58:15,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:58:15,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:15,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:58:15,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:58:15,178 INFO L87 Difference]: Start difference. First operand 277 states and 304 transitions. Second operand 4 states. [2019-11-20 07:58:16,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:16,639 INFO L93 Difference]: Finished difference Result 464 states and 511 transitions. [2019-11-20 07:58:16,639 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 07:58:16,640 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-20 07:58:16,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:16,642 INFO L225 Difference]: With dead ends: 464 [2019-11-20 07:58:16,642 INFO L226 Difference]: Without dead ends: 464 [2019-11-20 07:58:16,642 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 07:58:16,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2019-11-20 07:58:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 275. [2019-11-20 07:58:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-11-20 07:58:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 302 transitions. [2019-11-20 07:58:16,651 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 302 transitions. Word has length 13 [2019-11-20 07:58:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:16,651 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 302 transitions. [2019-11-20 07:58:16,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:58:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 302 transitions. [2019-11-20 07:58:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-20 07:58:16,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:16,652 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:16,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:16,853 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:16,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:16,853 INFO L82 PathProgramCache]: Analyzing trace with hash -673034562, now seen corresponding path program 1 times [2019-11-20 07:58:16,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:16,854 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1775757117] [2019-11-20 07:58:16,854 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:17,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 07:58:17,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:17,045 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 07:58:17,045 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:17,054 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:17,059 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 07:58:17,059 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:17,066 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:17,066 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:17,066 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-11-20 07:58:17,091 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 07:58:17,092 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:17,103 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:17,106 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 07:58:17,107 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:17,112 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:17,112 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 07:58:17,112 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-11-20 07:58:17,129 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 07:58:17,129 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:17,139 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 07:58:17,139 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1775757117] [2019-11-20 07:58:17,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:17,139 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-20 07:58:17,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758700864] [2019-11-20 07:58:17,140 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 07:58:17,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:17,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 07:58:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-20 07:58:17,141 INFO L87 Difference]: Start difference. First operand 275 states and 302 transitions. Second operand 6 states. [2019-11-20 07:58:17,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:17,751 INFO L93 Difference]: Finished difference Result 660 states and 726 transitions. [2019-11-20 07:58:17,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 07:58:17,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-20 07:58:17,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:17,756 INFO L225 Difference]: With dead ends: 660 [2019-11-20 07:58:17,757 INFO L226 Difference]: Without dead ends: 660 [2019-11-20 07:58:17,757 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-20 07:58:17,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-11-20 07:58:17,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 278. [2019-11-20 07:58:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-11-20 07:58:17,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 305 transitions. [2019-11-20 07:58:17,766 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 305 transitions. Word has length 16 [2019-11-20 07:58:17,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:17,766 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 305 transitions. [2019-11-20 07:58:17,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 07:58:17,767 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 305 transitions. [2019-11-20 07:58:17,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-20 07:58:17,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:17,768 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:17,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:17,974 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:17,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1743078772, now seen corresponding path program 1 times [2019-11-20 07:58:17,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:17,974 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1812975199] [2019-11-20 07:58:17,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:18,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-20 07:58:18,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:18,146 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 07:58:18,146 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:18,147 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:58:18,164 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 07:58:18,164 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1812975199] [2019-11-20 07:58:18,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:18,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 07:58:18,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055876175] [2019-11-20 07:58:18,165 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 07:58:18,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:18,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 07:58:18,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 07:58:18,165 INFO L87 Difference]: Start difference. First operand 278 states and 305 transitions. Second operand 5 states. [2019-11-20 07:58:18,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:18,362 INFO L93 Difference]: Finished difference Result 406 states and 444 transitions. [2019-11-20 07:58:18,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 07:58:18,363 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2019-11-20 07:58:18,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:18,365 INFO L225 Difference]: With dead ends: 406 [2019-11-20 07:58:18,365 INFO L226 Difference]: Without dead ends: 406 [2019-11-20 07:58:18,365 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 32 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 07:58:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2019-11-20 07:58:18,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 342. [2019-11-20 07:58:18,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2019-11-20 07:58:18,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 433 transitions. [2019-11-20 07:58:18,374 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 433 transitions. Word has length 18 [2019-11-20 07:58:18,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:18,374 INFO L462 AbstractCegarLoop]: Abstraction has 342 states and 433 transitions. [2019-11-20 07:58:18,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 07:58:18,374 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 433 transitions. [2019-11-20 07:58:18,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 07:58:18,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:18,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 07:58:18,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:18,578 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:18,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:18,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1792392977, now seen corresponding path program 1 times [2019-11-20 07:58:18,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:18,579 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [969475147] [2019-11-20 07:58:18,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:18,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 07:58:18,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:18,731 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 07:58:18,731 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:18,735 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 07:58:18,735 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [969475147] [2019-11-20 07:58:18,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:18,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 07:58:18,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444261243] [2019-11-20 07:58:18,736 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:58:18,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:18,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:58:18,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:58:18,737 INFO L87 Difference]: Start difference. First operand 342 states and 433 transitions. Second operand 3 states. [2019-11-20 07:58:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:18,755 INFO L93 Difference]: Finished difference Result 327 states and 408 transitions. [2019-11-20 07:58:18,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:18,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-11-20 07:58:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:18,758 INFO L225 Difference]: With dead ends: 327 [2019-11-20 07:58:18,758 INFO L226 Difference]: Without dead ends: 327 [2019-11-20 07:58:18,758 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 07:58:18,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2019-11-20 07:58:18,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2019-11-20 07:58:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 327 states. [2019-11-20 07:58:18,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 408 transitions. [2019-11-20 07:58:18,766 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 408 transitions. Word has length 19 [2019-11-20 07:58:18,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:18,766 INFO L462 AbstractCegarLoop]: Abstraction has 327 states and 408 transitions. [2019-11-20 07:58:18,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:58:18,766 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 408 transitions. [2019-11-20 07:58:18,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 07:58:18,767 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:18,767 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 07:58:18,970 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:18,971 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:18,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1097444349, now seen corresponding path program 1 times [2019-11-20 07:58:18,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:18,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [500538480] [2019-11-20 07:58:18,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:19,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-20 07:58:19,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:19,212 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:19,213 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 07:58:19,213 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:19,233 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 07:58:19,233 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 07:58:19,233 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 07:58:19,262 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:19,262 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 07:58:19,263 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:19,279 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 07:58:19,280 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 07:58:19,280 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 07:58:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:19,292 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:19,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [500538480] [2019-11-20 07:58:19,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:19,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2019-11-20 07:58:19,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119292147] [2019-11-20 07:58:19,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-20 07:58:19,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:19,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-20 07:58:19,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-20 07:58:19,317 INFO L87 Difference]: Start difference. First operand 327 states and 408 transitions. Second operand 6 states. [2019-11-20 07:58:20,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:20,393 INFO L93 Difference]: Finished difference Result 361 states and 445 transitions. [2019-11-20 07:58:20,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-20 07:58:20,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-11-20 07:58:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:20,395 INFO L225 Difference]: With dead ends: 361 [2019-11-20 07:58:20,396 INFO L226 Difference]: Without dead ends: 361 [2019-11-20 07:58:20,396 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 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 07:58:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2019-11-20 07:58:20,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 329. [2019-11-20 07:58:20,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2019-11-20 07:58:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 413 transitions. [2019-11-20 07:58:20,404 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 413 transitions. Word has length 20 [2019-11-20 07:58:20,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:20,404 INFO L462 AbstractCegarLoop]: Abstraction has 329 states and 413 transitions. [2019-11-20 07:58:20,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-20 07:58:20,404 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 413 transitions. [2019-11-20 07:58:20,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 07:58:20,405 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:20,405 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 07:58:20,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:20,608 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:20,609 INFO L82 PathProgramCache]: Analyzing trace with hash -1097444348, now seen corresponding path program 1 times [2019-11-20 07:58:20,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:20,609 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [963548336] [2019-11-20 07:58:20,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:20,797 INFO L255 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 07:58:20,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:20,814 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 07:58:20,814 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:20,821 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:20,831 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 07:58:20,831 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:20,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:20,837 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:20,837 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 07:58:20,864 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:20,865 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 07:58:20,867 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:20,877 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:20,886 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:20,886 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 07:58:20,886 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:20,894 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:20,895 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 07:58:20,895 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:18 [2019-11-20 07:58:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:20,920 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:20,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:58:21,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:21,316 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [963548336] [2019-11-20 07:58:21,316 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:21,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-20 07:58:21,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297684661] [2019-11-20 07:58:21,316 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 07:58:21,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:21,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 07:58:21,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-20 07:58:21,317 INFO L87 Difference]: Start difference. First operand 329 states and 413 transitions. Second operand 8 states. [2019-11-20 07:58:22,062 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2019-11-20 07:58:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:28,451 INFO L93 Difference]: Finished difference Result 375 states and 461 transitions. [2019-11-20 07:58:28,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 07:58:28,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-11-20 07:58:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:28,455 INFO L225 Difference]: With dead ends: 375 [2019-11-20 07:58:28,455 INFO L226 Difference]: Without dead ends: 375 [2019-11-20 07:58:28,455 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-11-20 07:58:28,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2019-11-20 07:58:28,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 328. [2019-11-20 07:58:28,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2019-11-20 07:58:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 412 transitions. [2019-11-20 07:58:28,464 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 412 transitions. Word has length 20 [2019-11-20 07:58:28,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:28,464 INFO L462 AbstractCegarLoop]: Abstraction has 328 states and 412 transitions. [2019-11-20 07:58:28,464 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 07:58:28,464 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 412 transitions. [2019-11-20 07:58:28,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 07:58:28,466 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:28,466 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 07:58:28,669 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:28,669 INFO L410 AbstractCegarLoop]: === Iteration 14 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:28,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:28,670 INFO L82 PathProgramCache]: Analyzing trace with hash 61651096, now seen corresponding path program 1 times [2019-11-20 07:58:28,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:28,670 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1290143957] [2019-11-20 07:58:28,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:28,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 07:58:28,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:28,870 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 07:58:28,871 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:28,873 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:28,873 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:28,873 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 07:58:28,877 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 07:58:28,877 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:28,882 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 07:58:28,882 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290143957] [2019-11-20 07:58:28,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:28,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 07:58:28,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582371477] [2019-11-20 07:58:28,883 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 07:58:28,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:28,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 07:58:28,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 07:58:28,884 INFO L87 Difference]: Start difference. First operand 328 states and 412 transitions. Second operand 3 states. [2019-11-20 07:58:29,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:29,372 INFO L93 Difference]: Finished difference Result 312 states and 380 transitions. [2019-11-20 07:58:29,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:29,372 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2019-11-20 07:58:29,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:29,374 INFO L225 Difference]: With dead ends: 312 [2019-11-20 07:58:29,374 INFO L226 Difference]: Without dead ends: 312 [2019-11-20 07:58:29,374 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 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 07:58:29,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2019-11-20 07:58:29,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2019-11-20 07:58:29,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2019-11-20 07:58:29,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 380 transitions. [2019-11-20 07:58:29,382 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 380 transitions. Word has length 20 [2019-11-20 07:58:29,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:29,382 INFO L462 AbstractCegarLoop]: Abstraction has 312 states and 380 transitions. [2019-11-20 07:58:29,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 07:58:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 380 transitions. [2019-11-20 07:58:29,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-20 07:58:29,383 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:29,383 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 07:58:29,586 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:29,586 INFO L410 AbstractCegarLoop]: === Iteration 15 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:29,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:29,587 INFO L82 PathProgramCache]: Analyzing trace with hash 61651097, now seen corresponding path program 1 times [2019-11-20 07:58:29,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:29,587 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1880196709] [2019-11-20 07:58:29,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:29,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:29,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 07:58:29,759 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:29,763 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 07:58:29,764 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:29,770 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:29,770 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:29,771 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 07:58:29,781 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 07:58:29,781 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:29,826 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 07:58:29,827 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1880196709] [2019-11-20 07:58:29,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:29,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 07:58:29,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888190976] [2019-11-20 07:58:29,827 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 07:58:29,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:29,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 07:58:29,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 07:58:29,828 INFO L87 Difference]: Start difference. First operand 312 states and 380 transitions. Second operand 4 states. [2019-11-20 07:58:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:30,596 INFO L93 Difference]: Finished difference Result 296 states and 348 transitions. [2019-11-20 07:58:30,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 07:58:30,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-11-20 07:58:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:30,598 INFO L225 Difference]: With dead ends: 296 [2019-11-20 07:58:30,598 INFO L226 Difference]: Without dead ends: 296 [2019-11-20 07:58:30,599 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 37 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 07:58:30,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-11-20 07:58:30,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2019-11-20 07:58:30,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 296 states. [2019-11-20 07:58:30,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 348 transitions. [2019-11-20 07:58:30,606 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 348 transitions. Word has length 20 [2019-11-20 07:58:30,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:30,606 INFO L462 AbstractCegarLoop]: Abstraction has 296 states and 348 transitions. [2019-11-20 07:58:30,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 07:58:30,607 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 348 transitions. [2019-11-20 07:58:30,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 07:58:30,607 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:30,607 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 07:58:30,808 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:30,808 INFO L410 AbstractCegarLoop]: === Iteration 16 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:30,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:30,809 INFO L82 PathProgramCache]: Analyzing trace with hash -882829447, now seen corresponding path program 1 times [2019-11-20 07:58:30,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:30,809 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1748351783] [2019-11-20 07:58:30,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:31,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-20 07:58:31,071 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:31,117 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 07:58:31,117 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:31,128 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 07:58:31,129 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1748351783] [2019-11-20 07:58:31,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:31,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 07:58:31,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118619879] [2019-11-20 07:58:31,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 07:58:31,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:31,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 07:58:31,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 07:58:31,130 INFO L87 Difference]: Start difference. First operand 296 states and 348 transitions. Second operand 5 states. [2019-11-20 07:58:31,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:31,350 INFO L93 Difference]: Finished difference Result 396 states and 443 transitions. [2019-11-20 07:58:31,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 07:58:31,350 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-11-20 07:58:31,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:31,352 INFO L225 Difference]: With dead ends: 396 [2019-11-20 07:58:31,352 INFO L226 Difference]: Without dead ends: 396 [2019-11-20 07:58:31,352 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 07:58:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2019-11-20 07:58:31,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 293. [2019-11-20 07:58:31,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2019-11-20 07:58:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 342 transitions. [2019-11-20 07:58:31,360 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 342 transitions. Word has length 22 [2019-11-20 07:58:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:31,360 INFO L462 AbstractCegarLoop]: Abstraction has 293 states and 342 transitions. [2019-11-20 07:58:31,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 07:58:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 342 transitions. [2019-11-20 07:58:31,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-20 07:58:31,361 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:31,361 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] [2019-11-20 07:58:31,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:31,565 INFO L410 AbstractCegarLoop]: === Iteration 17 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:31,566 INFO L82 PathProgramCache]: Analyzing trace with hash 981874369, now seen corresponding path program 1 times [2019-11-20 07:58:31,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:31,567 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1240562213] [2019-11-20 07:58:31,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:31,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:31,726 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 07:58:31,727 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:31,741 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:31,746 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1240562213] [2019-11-20 07:58:31,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:31,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-20 07:58:31,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861473194] [2019-11-20 07:58:31,747 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-20 07:58:31,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:31,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-20 07:58:31,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-20 07:58:31,747 INFO L87 Difference]: Start difference. First operand 293 states and 342 transitions. Second operand 5 states. [2019-11-20 07:58:31,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:31,910 INFO L93 Difference]: Finished difference Result 316 states and 351 transitions. [2019-11-20 07:58:31,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 07:58:31,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-11-20 07:58:31,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:31,913 INFO L225 Difference]: With dead ends: 316 [2019-11-20 07:58:31,913 INFO L226 Difference]: Without dead ends: 316 [2019-11-20 07:58:31,913 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-11-20 07:58:31,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2019-11-20 07:58:31,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 293. [2019-11-20 07:58:31,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2019-11-20 07:58:31,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 341 transitions. [2019-11-20 07:58:31,921 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 341 transitions. Word has length 25 [2019-11-20 07:58:31,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:31,922 INFO L462 AbstractCegarLoop]: Abstraction has 293 states and 341 transitions. [2019-11-20 07:58:31,922 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-20 07:58:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 341 transitions. [2019-11-20 07:58:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-20 07:58:31,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:31,925 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] [2019-11-20 07:58:32,126 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:32,127 INFO L410 AbstractCegarLoop]: === Iteration 18 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash 902949403, now seen corresponding path program 1 times [2019-11-20 07:58:32,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:32,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1506175662] [2019-11-20 07:58:32,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/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 07:58:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:32,308 INFO L255 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 07:58:32,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:32,350 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 07:58:32,350 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:32,357 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:32,361 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 07:58:32,361 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:32,366 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:32,367 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:32,367 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:23, output treesize:15 [2019-11-20 07:58:32,409 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 07:58:32,410 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:32,424 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:32,426 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 07:58:32,427 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:32,432 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:32,433 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 07:58:32,433 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2019-11-20 07:58:32,455 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 07:58:32,455 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:32,471 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 07:58:32,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1506175662] [2019-11-20 07:58:32,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:32,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 7 [2019-11-20 07:58:32,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710392285] [2019-11-20 07:58:32,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 07:58:32,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:32,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 07:58:32,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-20 07:58:32,473 INFO L87 Difference]: Start difference. First operand 293 states and 341 transitions. Second operand 7 states. [2019-11-20 07:58:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:33,228 INFO L93 Difference]: Finished difference Result 392 states and 438 transitions. [2019-11-20 07:58:33,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 07:58:33,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2019-11-20 07:58:33,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:33,232 INFO L225 Difference]: With dead ends: 392 [2019-11-20 07:58:33,232 INFO L226 Difference]: Without dead ends: 392 [2019-11-20 07:58:33,232 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-20 07:58:33,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2019-11-20 07:58:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 279. [2019-11-20 07:58:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2019-11-20 07:58:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 318 transitions. [2019-11-20 07:58:33,239 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 318 transitions. Word has length 27 [2019-11-20 07:58:33,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:33,239 INFO L462 AbstractCegarLoop]: Abstraction has 279 states and 318 transitions. [2019-11-20 07:58:33,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 07:58:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 318 transitions. [2019-11-20 07:58:33,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 07:58:33,241 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:33,241 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 07:58:33,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:33,444 INFO L410 AbstractCegarLoop]: === Iteration 19 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1569720489, now seen corresponding path program 1 times [2019-11-20 07:58:33,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:33,445 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1529729620] [2019-11-20 07:58:33,445 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:33,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 07:58:33,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:33,694 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 07:58:33,694 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,696 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:33,697 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,697 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 07:58:33,727 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:33,727 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 07:58:33,728 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,749 INFO L567 ElimStorePlain]: treesize reduction 14, result has 56.3 percent of original size [2019-11-20 07:58:33,749 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,749 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:18 [2019-11-20 07:58:33,802 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 07:58:33,802 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,816 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:33,817 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 07:58:33,818 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:31, output treesize:30 [2019-11-20 07:58:33,837 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:33,838 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 28 [2019-11-20 07:58:33,838 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,852 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:33,852 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 07:58:33,852 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:43, output treesize:28 [2019-11-20 07:58:33,927 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:33,928 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 89 [2019-11-20 07:58:33,928 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,975 INFO L567 ElimStorePlain]: treesize reduction 40, result has 51.8 percent of original size [2019-11-20 07:58:33,975 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:33,975 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:43 [2019-11-20 07:58:34,017 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 37 treesize of output 28 [2019-11-20 07:58:34,018 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:34,041 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:34,042 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:34,042 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:58, output treesize:54 [2019-11-20 07:58:34,189 INFO L343 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2019-11-20 07:58:34,190 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 82 treesize of output 51 [2019-11-20 07:58:34,191 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:34,229 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:34,229 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:34,229 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:89, output treesize:81 [2019-11-20 07:58:34,366 INFO L343 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2019-11-20 07:58:34,367 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 62 [2019-11-20 07:58:34,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:58:34,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:58:34,368 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 07:58:34,428 INFO L567 ElimStorePlain]: treesize reduction 12, result has 73.9 percent of original size [2019-11-20 07:58:34,429 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 07:58:34,429 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:90, output treesize:34 [2019-11-20 07:58:34,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:34,546 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:46,876 WARN L191 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2019-11-20 07:58:46,887 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:46,931 INFO L567 ElimStorePlain]: treesize reduction 71, result has 26.0 percent of original size [2019-11-20 07:58:46,932 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 07:58:46,932 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:55, output treesize:24 [2019-11-20 07:58:46,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:58:47,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:58:47,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:58:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:47,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1529729620] [2019-11-20 07:58:47,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:58:47,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 12] imperfect sequences [] total 22 [2019-11-20 07:58:47,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714965646] [2019-11-20 07:58:47,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 07:58:47,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:58:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 07:58:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=440, Unknown=3, NotChecked=0, Total=506 [2019-11-20 07:58:47,289 INFO L87 Difference]: Start difference. First operand 279 states and 318 transitions. Second operand 23 states. [2019-11-20 07:58:48,569 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2019-11-20 07:58:48,930 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-11-20 07:58:49,138 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2019-11-20 07:58:49,430 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2019-11-20 07:58:49,758 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2019-11-20 07:58:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 07:58:55,695 INFO L93 Difference]: Finished difference Result 360 states and 410 transitions. [2019-11-20 07:58:55,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-20 07:58:55,696 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2019-11-20 07:58:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 07:58:55,698 INFO L225 Difference]: With dead ends: 360 [2019-11-20 07:58:55,698 INFO L226 Difference]: Without dead ends: 360 [2019-11-20 07:58:55,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=259, Invalid=860, Unknown=3, NotChecked=0, Total=1122 [2019-11-20 07:58:55,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2019-11-20 07:58:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 278. [2019-11-20 07:58:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2019-11-20 07:58:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 317 transitions. [2019-11-20 07:58:55,707 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 317 transitions. Word has length 28 [2019-11-20 07:58:55,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 07:58:55,707 INFO L462 AbstractCegarLoop]: Abstraction has 278 states and 317 transitions. [2019-11-20 07:58:55,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 07:58:55,707 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 317 transitions. [2019-11-20 07:58:55,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-20 07:58:55,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 07:58:55,708 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 07:58:55,912 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:55,913 INFO L410 AbstractCegarLoop]: === Iteration 20 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 07:58:55,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 07:58:55,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1569720490, now seen corresponding path program 1 times [2019-11-20 07:58:55,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 07:58:55,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1108913672] [2019-11-20 07:58:55,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 07:58:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 07:58:56,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-20 07:58:56,255 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 07:58:56,270 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 07:58:56,270 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,292 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,298 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 07:58:56,298 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,328 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,329 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,329 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 07:58:56,340 INFO L392 ElimStorePlain]: Different costs {1=[|v_#length_188|], 3=[|v_#valid_276|]} [2019-11-20 07:58:56,344 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:56,345 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 07:58:56,345 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,369 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,389 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,390 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 07:58:56,390 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,427 INFO L567 ElimStorePlain]: treesize reduction 14, result has 70.2 percent of original size [2019-11-20 07:58:56,428 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,428 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:36, output treesize:33 [2019-11-20 07:58:56,456 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 07:58:56,456 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,481 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,485 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 07:58:56,485 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,504 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,505 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 07:58:56,505 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:54, output treesize:53 [2019-11-20 07:58:56,541 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:56,542 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 07:58:56,542 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,580 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:56,581 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 44 treesize of output 35 [2019-11-20 07:58:56,581 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,608 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,609 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 07:58:56,609 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:79, output treesize:51 [2019-11-20 07:58:56,663 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:56,665 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:56,667 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 25 treesize of output 30 [2019-11-20 07:58:56,668 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,709 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,744 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,744 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2019-11-20 07:58:56,745 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,785 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,785 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,785 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:62, output treesize:52 [2019-11-20 07:58:56,891 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2019-11-20 07:58:56,891 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:56,947 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:56,954 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 37 treesize of output 28 [2019-11-20 07:58:56,955 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:57,018 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:57,018 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:57,019 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:76, output treesize:68 [2019-11-20 07:58:57,171 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:57,172 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2019-11-20 07:58:57,173 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:57,213 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:57,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:57,252 INFO L343 Elim1Store]: treesize reduction 28, result has 41.7 percent of original size [2019-11-20 07:58:57,253 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 2 case distinctions, treesize of input 93 treesize of output 70 [2019-11-20 07:58:57,253 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:57,330 INFO L567 ElimStorePlain]: treesize reduction 26, result has 80.6 percent of original size [2019-11-20 07:58:57,330 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 07:58:57,330 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:128, output treesize:108 [2019-11-20 07:58:57,405 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 07:58:57,426 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:57,427 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 94 treesize of output 69 [2019-11-20 07:58:57,428 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:58:57,429 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:58:57,429 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 07:58:57,502 INFO L567 ElimStorePlain]: treesize reduction 12, result has 84.2 percent of original size [2019-11-20 07:58:57,508 INFO L343 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2019-11-20 07:58:57,508 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 1 case distinctions, treesize of input 33 treesize of output 13 [2019-11-20 07:58:57,508 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:58:57,527 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:58:57,527 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 07:58:57,527 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:126, output treesize:35 [2019-11-20 07:58:57,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:58:57,634 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 07:58:58,638 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:58:59,325 WARN L191 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-20 07:59:01,875 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-20 07:59:05,288 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 07:59:05,295 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 07:59:05,539 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-11-20 07:59:05,539 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:59:05,544 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 07:59:05,549 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 07:59:05,888 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-11-20 07:59:05,888 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:59:05,897 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 07:59:05,903 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-20 07:59:06,515 WARN L191 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-11-20 07:59:06,515 INFO L567 ElimStorePlain]: treesize reduction 56, result has 75.1 percent of original size [2019-11-20 07:59:06,520 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 07:59:06,525 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-20 07:59:06,714 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-11-20 07:59:06,714 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 07:59:06,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:59:06,715 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:59:06,717 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,718 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,719 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 07:59:06,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:59:06,722 INFO L496 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 4 dim-2 vars, End of recursive call: 9 dim-0 vars, and 9 xjuncts. [2019-11-20 07:59:06,722 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 14 variables, input treesize:234, output treesize:184 [2019-11-20 07:59:07,395 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 47 [2019-11-20 07:59:07,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 07:59:11,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 07:59:11,574 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1108913672] [2019-11-20 07:59:11,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 07:59:11,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 12] imperfect sequences [] total 22 [2019-11-20 07:59:11,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334705547] [2019-11-20 07:59:11,574 INFO L442 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-11-20 07:59:11,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 07:59:11,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-11-20 07:59:11,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=443, Unknown=1, NotChecked=0, Total=506 [2019-11-20 07:59:11,575 INFO L87 Difference]: Start difference. First operand 278 states and 317 transitions. Second operand 23 states. [2019-11-20 07:59:13,016 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-11-20 08:00:05,920 WARN L191 SmtUtils]: Spent 43.35 s on a formula simplification that was a NOOP. DAG size: 140 [2019-11-20 08:00:08,416 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-11-20 08:00:08,864 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 51 [2019-11-20 08:00:10,063 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2019-11-20 08:00:10,533 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 50 [2019-11-20 08:00:13,530 WARN L191 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2019-11-20 08:00:34,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:00:34,432 INFO L93 Difference]: Finished difference Result 444 states and 510 transitions. [2019-11-20 08:00:34,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-20 08:00:34,434 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 28 [2019-11-20 08:00:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:00:34,436 INFO L225 Difference]: With dead ends: 444 [2019-11-20 08:00:34,436 INFO L226 Difference]: Without dead ends: 444 [2019-11-20 08:00:34,437 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 68.4s TimeCoverageRelationStatistics Valid=189, Invalid=998, Unknown=3, NotChecked=0, Total=1190 [2019-11-20 08:00:34,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-11-20 08:00:34,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 277. [2019-11-20 08:00:34,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2019-11-20 08:00:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 316 transitions. [2019-11-20 08:00:34,443 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 316 transitions. Word has length 28 [2019-11-20 08:00:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:00:34,444 INFO L462 AbstractCegarLoop]: Abstraction has 277 states and 316 transitions. [2019-11-20 08:00:34,444 INFO L463 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-11-20 08:00:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 316 transitions. [2019-11-20 08:00:34,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-20 08:00:34,445 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:00:34,445 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] [2019-11-20 08:00:34,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:00:34,649 INFO L410 AbstractCegarLoop]: === Iteration 21 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:00:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:00:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash 140225587, now seen corresponding path program 1 times [2019-11-20 08:00:34,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:00:34,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [733280987] [2019-11-20 08:00:34,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:00:34,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:00:34,821 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-20 08:00:34,822 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:00:34,825 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 08:00:34,825 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:00:34,827 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:00:34,827 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:00:34,827 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:00:40,961 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 08:00:40,962 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:00:55,211 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 08:00:55,212 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [733280987] [2019-11-20 08:00:55,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:00:55,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2019-11-20 08:00:55,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886763122] [2019-11-20 08:00:55,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-20 08:00:55,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:00:55,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-20 08:00:55,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=103, Unknown=8, NotChecked=0, Total=156 [2019-11-20 08:00:55,213 INFO L87 Difference]: Start difference. First operand 277 states and 316 transitions. Second operand 13 states. [2019-11-20 08:01:17,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:01:17,260 INFO L93 Difference]: Finished difference Result 285 states and 317 transitions. [2019-11-20 08:01:17,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 08:01:17,260 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2019-11-20 08:01:17,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:01:17,261 INFO L225 Difference]: With dead ends: 285 [2019-11-20 08:01:17,261 INFO L226 Difference]: Without dead ends: 281 [2019-11-20 08:01:17,262 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=45, Invalid=103, Unknown=8, NotChecked=0, Total=156 [2019-11-20 08:01:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2019-11-20 08:01:17,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 275. [2019-11-20 08:01:17,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-11-20 08:01:17,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 313 transitions. [2019-11-20 08:01:17,266 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 313 transitions. Word has length 29 [2019-11-20 08:01:17,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:01:17,266 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 313 transitions. [2019-11-20 08:01:17,267 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-20 08:01:17,267 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 313 transitions. [2019-11-20 08:01:17,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 08:01:17,267 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:01:17,267 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] [2019-11-20 08:01:17,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:17,470 INFO L410 AbstractCegarLoop]: === Iteration 22 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:01:17,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:01:17,471 INFO L82 PathProgramCache]: Analyzing trace with hash 957100191, now seen corresponding path program 1 times [2019-11-20 08:01:17,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:01:17,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [443415608] [2019-11-20 08:01:17,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:01:17,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-20 08:01:17,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:01:17,704 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 08:01:17,705 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:17,711 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:17,712 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 08:01:17,712 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:12 [2019-11-20 08:01:17,727 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:17,728 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 22 treesize of output 21 [2019-11-20 08:01:17,728 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:17,737 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:17,737 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 08:01:17,737 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:12 [2019-11-20 08:01:17,740 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 16 treesize of output 8 [2019-11-20 08:01:17,740 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:17,741 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:17,742 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 08:01:17,742 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-11-20 08:01:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:17,751 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:01:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:17,828 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [443415608] [2019-11-20 08:01:17,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:01:17,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2019-11-20 08:01:17,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674012140] [2019-11-20 08:01:17,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-20 08:01:17,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:01:17,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-20 08:01:17,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2019-11-20 08:01:17,829 INFO L87 Difference]: Start difference. First operand 275 states and 313 transitions. Second operand 11 states. [2019-11-20 08:01:18,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:01:18,750 INFO L93 Difference]: Finished difference Result 306 states and 340 transitions. [2019-11-20 08:01:18,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:01:18,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2019-11-20 08:01:18,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:01:18,754 INFO L225 Difference]: With dead ends: 306 [2019-11-20 08:01:18,754 INFO L226 Difference]: Without dead ends: 306 [2019-11-20 08:01:18,754 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2019-11-20 08:01:18,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2019-11-20 08:01:18,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 275. [2019-11-20 08:01:18,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-11-20 08:01:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 312 transitions. [2019-11-20 08:01:18,759 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 312 transitions. Word has length 30 [2019-11-20 08:01:18,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:01:18,760 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 312 transitions. [2019-11-20 08:01:18,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-20 08:01:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 312 transitions. [2019-11-20 08:01:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-20 08:01:18,760 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:01:18,761 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] [2019-11-20 08:01:18,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:18,961 INFO L410 AbstractCegarLoop]: === Iteration 23 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:01:18,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:01:18,962 INFO L82 PathProgramCache]: Analyzing trace with hash 58665858, now seen corresponding path program 1 times [2019-11-20 08:01:18,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:01:18,962 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1846645805] [2019-11-20 08:01:18,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:01:19,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 08:01:19,136 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:01:19,143 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 08:01:19,143 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:01:19,147 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 08:01:19,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1846645805] [2019-11-20 08:01:19,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:01:19,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 08:01:19,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113058293] [2019-11-20 08:01:19,148 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 08:01:19,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:01:19,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 08:01:19,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 08:01:19,148 INFO L87 Difference]: Start difference. First operand 275 states and 312 transitions. Second operand 3 states. [2019-11-20 08:01:19,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:01:19,161 INFO L93 Difference]: Finished difference Result 260 states and 287 transitions. [2019-11-20 08:01:19,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 08:01:19,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-11-20 08:01:19,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:01:19,163 INFO L225 Difference]: With dead ends: 260 [2019-11-20 08:01:19,163 INFO L226 Difference]: Without dead ends: 242 [2019-11-20 08:01:19,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 58 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 08:01:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2019-11-20 08:01:19,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2019-11-20 08:01:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-11-20 08:01:19,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 269 transitions. [2019-11-20 08:01:19,168 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 269 transitions. Word has length 30 [2019-11-20 08:01:19,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:01:19,168 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 269 transitions. [2019-11-20 08:01:19,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 08:01:19,169 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 269 transitions. [2019-11-20 08:01:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 08:01:19,169 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:01:19,169 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 08:01:19,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:19,370 INFO L410 AbstractCegarLoop]: === Iteration 24 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:01:19,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:01:19,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1884216333, now seen corresponding path program 1 times [2019-11-20 08:01:19,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:01:19,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [283260194] [2019-11-20 08:01:19,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:01:19,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-20 08:01:19,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:01:19,703 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 08:01:19,704 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,711 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:19,711 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,712 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-20 08:01:19,759 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:19,760 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-20 08:01:19,760 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,778 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:19,778 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 08:01:19,778 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2019-11-20 08:01:19,797 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:19,798 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2019-11-20 08:01:19,798 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,809 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:19,809 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 08:01:19,809 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2019-11-20 08:01:19,823 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 08:01:19,823 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,825 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:19,825 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 08:01:19,825 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:5 [2019-11-20 08:01:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:19,836 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:01:19,878 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:19,878 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 18 treesize of output 22 [2019-11-20 08:01:19,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:01:19,879 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,881 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:19,881 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:01:19,881 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:18, output treesize:7 [2019-11-20 08:01:19,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 08:01:19,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [283260194] [2019-11-20 08:01:19,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:01:19,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 4] imperfect sequences [] total 9 [2019-11-20 08:01:19,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326993309] [2019-11-20 08:01:19,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 08:01:19,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:01:19,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 08:01:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-20 08:01:19,901 INFO L87 Difference]: Start difference. First operand 242 states and 269 transitions. Second operand 10 states. [2019-11-20 08:01:20,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:01:20,993 INFO L93 Difference]: Finished difference Result 262 states and 292 transitions. [2019-11-20 08:01:20,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-20 08:01:20,993 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2019-11-20 08:01:20,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:01:20,994 INFO L225 Difference]: With dead ends: 262 [2019-11-20 08:01:20,995 INFO L226 Difference]: Without dead ends: 262 [2019-11-20 08:01:20,995 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-11-20 08:01:20,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2019-11-20 08:01:20,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 241. [2019-11-20 08:01:20,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2019-11-20 08:01:20,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 268 transitions. [2019-11-20 08:01:20,999 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 268 transitions. Word has length 32 [2019-11-20 08:01:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:01:21,000 INFO L462 AbstractCegarLoop]: Abstraction has 241 states and 268 transitions. [2019-11-20 08:01:21,000 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 08:01:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 268 transitions. [2019-11-20 08:01:21,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-20 08:01:21,000 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:01:21,001 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 08:01:21,203 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:21,204 INFO L410 AbstractCegarLoop]: === Iteration 25 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:01:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:01:21,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1884216332, now seen corresponding path program 1 times [2019-11-20 08:01:21,204 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:01:21,205 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [792209842] [2019-11-20 08:01:21,205 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:01:21,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 22 conjunts are in the unsatisfiable core [2019-11-20 08:01:21,473 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:01:21,477 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 08:01:21,478 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,485 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,488 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 08:01:21,488 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,495 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,495 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 08:01:21,519 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:21,520 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 08:01:21,520 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,533 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,542 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,542 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 08:01:21,542 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,553 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,553 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,553 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:21 [2019-11-20 08:01:21,576 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 08:01:21,576 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,596 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,602 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 08:01:21,602 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,618 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,618 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,618 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:37 [2019-11-20 08:01:21,688 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:21,688 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 28 [2019-11-20 08:01:21,689 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,715 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,722 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:21,723 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 08:01:21,723 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,744 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,744 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 08:01:21,744 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:37 [2019-11-20 08:01:21,762 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:21,763 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 28 [2019-11-20 08:01:21,763 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,808 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,813 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:01:21,813 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 08:01:21,814 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,837 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,838 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 08:01:21,838 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:63, output treesize:37 [2019-11-20 08:01:21,842 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 25 treesize of output 13 [2019-11-20 08:01:21,843 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,854 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,857 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-20 08:01:21,857 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:21,866 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:21,866 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 08:01:21,866 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:20 [2019-11-20 08:01:21,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:21,894 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:01:22,300 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:01:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:22,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [792209842] [2019-11-20 08:01:22,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:01:22,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2019-11-20 08:01:22,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691899038] [2019-11-20 08:01:22,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-20 08:01:22,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:01:22,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-20 08:01:22,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2019-11-20 08:01:22,749 INFO L87 Difference]: Start difference. First operand 241 states and 268 transitions. Second operand 14 states. [2019-11-20 08:01:24,182 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2019-11-20 08:01:33,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:01:33,239 INFO L93 Difference]: Finished difference Result 352 states and 392 transitions. [2019-11-20 08:01:33,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 08:01:33,241 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2019-11-20 08:01:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:01:33,243 INFO L225 Difference]: With dead ends: 352 [2019-11-20 08:01:33,243 INFO L226 Difference]: Without dead ends: 352 [2019-11-20 08:01:33,243 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-11-20 08:01:33,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2019-11-20 08:01:33,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 240. [2019-11-20 08:01:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2019-11-20 08:01:33,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 267 transitions. [2019-11-20 08:01:33,248 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 267 transitions. Word has length 32 [2019-11-20 08:01:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:01:33,249 INFO L462 AbstractCegarLoop]: Abstraction has 240 states and 267 transitions. [2019-11-20 08:01:33,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-20 08:01:33,249 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 267 transitions. [2019-11-20 08:01:33,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 08:01:33,250 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:01:33,250 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] [2019-11-20 08:01:33,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:33,454 INFO L410 AbstractCegarLoop]: === Iteration 26 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:01:33,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:01:33,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1786208334, now seen corresponding path program 1 times [2019-11-20 08:01:33,455 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:01:33,455 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1580504496] [2019-11-20 08:01:33,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:01:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:01:33,700 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-20 08:01:33,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:01:33,734 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:33,735 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 08:01:33,735 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:33,748 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-20 08:01:33,749 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 08:01:33,749 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2019-11-20 08:01:33,784 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:33,785 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 08:01:33,785 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:33,792 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:33,792 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:01:33,792 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2019-11-20 08:01:33,839 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 08:01:33,839 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:33,857 INFO L567 ElimStorePlain]: treesize reduction 4, result has 76.5 percent of original size [2019-11-20 08:01:33,857 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 08:01:33,857 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:13 [2019-11-20 08:01:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:33,891 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:01:33,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:01:33,930 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2019-11-20 08:01:33,930 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:33,944 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:33,944 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 14 treesize of output 18 [2019-11-20 08:01:33,945 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:01:33,945 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:01:33,950 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:01:33,950 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2019-11-20 08:01:33,950 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:26, output treesize:8 [2019-11-20 08:01:33,960 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:01:33,960 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1580504496] [2019-11-20 08:01:33,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:01:33,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 8 [2019-11-20 08:01:33,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732270906] [2019-11-20 08:01:33,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 08:01:33,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:01:33,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 08:01:33,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:01:33,962 INFO L87 Difference]: Start difference. First operand 240 states and 267 transitions. Second operand 9 states. [2019-11-20 08:02:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:02:13,687 INFO L93 Difference]: Finished difference Result 413 states and 460 transitions. [2019-11-20 08:02:13,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-20 08:02:13,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-20 08:02:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:02:13,690 INFO L225 Difference]: With dead ends: 413 [2019-11-20 08:02:13,690 INFO L226 Difference]: Without dead ends: 413 [2019-11-20 08:02:13,690 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2019-11-20 08:02:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2019-11-20 08:02:13,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 243. [2019-11-20 08:02:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2019-11-20 08:02:13,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 274 transitions. [2019-11-20 08:02:13,695 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 274 transitions. Word has length 35 [2019-11-20 08:02:13,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:02:13,696 INFO L462 AbstractCegarLoop]: Abstraction has 243 states and 274 transitions. [2019-11-20 08:02:13,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 08:02:13,696 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 274 transitions. [2019-11-20 08:02:13,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-20 08:02:13,697 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:02:13,697 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] [2019-11-20 08:02:13,900 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:02:13,900 INFO L410 AbstractCegarLoop]: === Iteration 27 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:02:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:02:13,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1786208333, now seen corresponding path program 1 times [2019-11-20 08:02:13,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:02:13,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1451951704] [2019-11-20 08:02:13,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:02:14,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:02:14,157 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-20 08:02:14,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:02:14,167 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 08:02:14,167 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,169 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,169 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,169 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 08:02:14,176 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 12 treesize of output 14 [2019-11-20 08:02:14,176 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,186 INFO L567 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2019-11-20 08:02:14,186 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 08:02:14,186 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:11 [2019-11-20 08:02:14,213 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,214 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 46 [2019-11-20 08:02:14,214 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,234 INFO L567 ElimStorePlain]: treesize reduction 22, result has 42.1 percent of original size [2019-11-20 08:02:14,235 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 08:02:14,235 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:16 [2019-11-20 08:02:14,260 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,260 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 46 [2019-11-20 08:02:14,260 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,280 INFO L567 ElimStorePlain]: treesize reduction 28, result has 36.4 percent of original size [2019-11-20 08:02:14,281 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 08:02:14,281 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:23, output treesize:16 [2019-11-20 08:02:14,303 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 9 treesize of output 3 [2019-11-20 08:02:14,303 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,307 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,307 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 08:02:14,308 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:13 [2019-11-20 08:02:14,336 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,336 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 18 treesize of output 36 [2019-11-20 08:02:14,337 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,342 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,342 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,342 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:4 [2019-11-20 08:02:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:02:14,356 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:02:14,377 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 10 treesize of output 4 [2019-11-20 08:02:14,377 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:14,379 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:14,379 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 08:02:14,379 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:8 [2019-11-20 08:02:14,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-20 08:02:14,421 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1451951704] [2019-11-20 08:02:14,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 08:02:14,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2019-11-20 08:02:14,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162533668] [2019-11-20 08:02:14,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 08:02:14,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 08:02:14,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 08:02:14,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-20 08:02:14,423 INFO L87 Difference]: Start difference. First operand 243 states and 274 transitions. Second operand 9 states. [2019-11-20 08:02:15,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 08:02:15,645 INFO L93 Difference]: Finished difference Result 280 states and 312 transitions. [2019-11-20 08:02:15,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-20 08:02:15,645 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2019-11-20 08:02:15,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 08:02:15,647 INFO L225 Difference]: With dead ends: 280 [2019-11-20 08:02:15,647 INFO L226 Difference]: Without dead ends: 280 [2019-11-20 08:02:15,647 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 6 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2019-11-20 08:02:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2019-11-20 08:02:15,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 244. [2019-11-20 08:02:15,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 244 states. [2019-11-20 08:02:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 275 transitions. [2019-11-20 08:02:15,652 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 275 transitions. Word has length 35 [2019-11-20 08:02:15,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 08:02:15,652 INFO L462 AbstractCegarLoop]: Abstraction has 244 states and 275 transitions. [2019-11-20 08:02:15,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 08:02:15,653 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 275 transitions. [2019-11-20 08:02:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-11-20 08:02:15,653 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 08:02:15,653 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 08:02:15,856 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:02:15,857 INFO L410 AbstractCegarLoop]: === Iteration 28 === [mainErr51REQUIRES_VIOLATION, mainErr116REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr93REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr70REQUIRES_VIOLATION, mainErr135REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr112REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr89REQUIRES_VIOLATION, mainErr47REQUIRES_VIOLATION, mainErr66REQUIRES_VIOLATION, mainErr131REQUIRES_VIOLATION, mainErr43REQUIRES_VIOLATION, mainErr108REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr85REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr63REQUIRES_VIOLATION, mainErr105REQUIRES_VIOLATION, mainErr82REQUIRES_VIOLATION, mainErr124REQUIRES_VIOLATION, mainErr101REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr59REQUIRES_VIOLATION, mainErr78REQUIRES_VIOLATION, mainErr143REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr120REQUIRES_VIOLATION, mainErr36REQUIRES_VIOLATION, mainErr32REQUIRES_VIOLATION, mainErr97REQUIRES_VIOLATION, mainErr55REQUIRES_VIOLATION, mainErr74REQUIRES_VIOLATION, mainErr139REQUIRES_VIOLATION, mainErr94REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr52REQUIRES_VIOLATION, mainErr136REQUIRES_VIOLATION, mainErr48REQUIRES_VIOLATION, mainErr71REQUIRES_VIOLATION, mainErr113REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr132REQUIRES_VIOLATION, mainErr90ASSERT_VIOLATIONMEMORY_FREE, mainErr25REQUIRES_VIOLATION, mainErr67REQUIRES_VIOLATION, mainErr109REQUIRES_VIOLATION, mainErr86REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr44REQUIRES_VIOLATION, mainErr128REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr41REQUIRES_VIOLATION, mainErr83REQUIRES_VIOLATION, mainErr125REQUIRES_VIOLATION, mainErr37REQUIRES_VIOLATION, mainErr60REQUIRES_VIOLATION, mainErr102REQUIRES_VIOLATION, mainErr92ASSERT_VIOLATIONMEMORY_FREE, mainErr144REQUIRES_VIOLATION, mainErr91ASSERT_VIOLATIONMEMORY_FREE, mainErr79REQUIRES_VIOLATION, mainErr150ASSERT_VIOLATIONMEMORY_FREE, mainErr121REQUIRES_VIOLATION, mainErr98REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr56REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr140REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION, mainErr75REQUIRES_VIOLATION, mainErr117REQUIRES_VIOLATION, mainErr95REQUIRES_VIOLATION, mainErr137REQUIRES_VIOLATION, mainErr30REQUIRES_VIOLATION, mainErr72REQUIRES_VIOLATION, mainErr114REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr49REQUIRES_VIOLATION, mainErr133REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr45REQUIRES_VIOLATION, mainErr68REQUIRES_VIOLATION, mainErr110REQUIRES_VIOLATION, mainErr149ASSERT_VIOLATIONMEMORY_FREE, mainErr87REQUIRES_VIOLATION, mainErr129REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr64REQUIRES_VIOLATION, mainErr106REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr84REQUIRES_VIOLATION, mainErr126REQUIRES_VIOLATION, mainErr61REQUIRES_VIOLATION, mainErr103REQUIRES_VIOLATION, mainErr122REQUIRES_VIOLATION, mainErr38REQUIRES_VIOLATION, mainErr80REQUIRES_VIOLATION, mainErr57REQUIRES_VIOLATION, mainErr34REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr99REQUIRES_VIOLATION, mainErr141REQUIRES_VIOLATION, mainErr148ASSERT_VIOLATIONMEMORY_FREE, mainErr11REQUIRES_VIOLATION, mainErr53REQUIRES_VIOLATION, mainErr76REQUIRES_VIOLATION, mainErr118REQUIRES_VIOLATION, mainErr73REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr50REQUIRES_VIOLATION, mainErr146ASSERT_VIOLATIONMEMORY_FREE, mainErr31REQUIRES_VIOLATION, mainErr115REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr134REQUIRES_VIOLATION, mainErr69REQUIRES_VIOLATION, mainErr111REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr46REQUIRES_VIOLATION, mainErr88REQUIRES_VIOLATION, mainErr130REQUIRES_VIOLATION, mainErr65REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr42REQUIRES_VIOLATION, mainErr145ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr107REQUIRES_VIOLATION, mainErr62REQUIRES_VIOLATION, mainErr127REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr104REQUIRES_VIOLATION, mainErr147ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr81REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr58REQUIRES_VIOLATION, mainErr123REQUIRES_VIOLATION, mainErr35REQUIRES_VIOLATION, mainErr100REQUIRES_VIOLATION, mainErr142REQUIRES_VIOLATION, mainErr77REQUIRES_VIOLATION, mainErr151ENSURES_VIOLATIONMEMORY_LEAK, mainErr119REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr54REQUIRES_VIOLATION, mainErr96REQUIRES_VIOLATION, mainErr138REQUIRES_VIOLATION]=== [2019-11-20 08:02:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 08:02:15,857 INFO L82 PathProgramCache]: Analyzing trace with hash 468856433, now seen corresponding path program 1 times [2019-11-20 08:02:15,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 08:02:15,858 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [235228133] [2019-11-20 08:02:15,858 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7161916-fdc8-4138-b1c6-042264d9b3d1/bin/uautomizer/cvc4 Starting monitored process 29 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:02:16,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 08:02:16,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-20 08:02:16,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 08:02:16,187 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 08:02:16,188 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,194 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,194 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,194 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 08:02:16,210 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 08:02:16,210 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,229 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,234 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 08:02:16,234 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,248 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,249 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,249 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:35, output treesize:27 [2019-11-20 08:02:16,279 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:16,280 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-11-20 08:02:16,280 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,307 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,318 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:16,318 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2019-11-20 08:02:16,319 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,331 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,332 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,332 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:57, output treesize:27 [2019-11-20 08:02:16,364 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,364 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 08:02:16,365 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,424 INFO L567 ElimStorePlain]: treesize reduction 14, result has 73.6 percent of original size [2019-11-20 08:02:16,424 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,424 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:41, output treesize:39 [2019-11-20 08:02:16,466 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 19 treesize of output 18 [2019-11-20 08:02:16,466 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,510 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,515 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 19 treesize of output 18 [2019-11-20 08:02:16,515 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,557 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,558 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 08:02:16,558 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:56, output treesize:59 [2019-11-20 08:02:16,609 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:16,610 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-20 08:02:16,639 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,639 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 2 case distinctions, treesize of input 55 treesize of output 64 [2019-11-20 08:02:16,640 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,776 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2019-11-20 08:02:16,777 INFO L567 ElimStorePlain]: treesize reduction 28, result has 73.8 percent of original size [2019-11-20 08:02:16,783 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:16,784 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2019-11-20 08:02:16,784 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,875 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,876 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 08:02:16,876 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:85, output treesize:57 [2019-11-20 08:02:16,957 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,957 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 30 [2019-11-20 08:02:16,958 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,979 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:16,979 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:16,979 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:53 [2019-11-20 08:02:17,055 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:17,056 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 67 [2019-11-20 08:02:17,056 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:17,122 INFO L567 ElimStorePlain]: treesize reduction 36, result has 66.4 percent of original size [2019-11-20 08:02:17,129 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 08:02:17,129 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:17,155 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:17,155 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:17,156 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:75, output treesize:67 [2019-11-20 08:02:17,260 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:17,262 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 52 [2019-11-20 08:02:17,262 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:17,299 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:17,302 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:17,414 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2019-11-20 08:02:17,415 INFO L343 Elim1Store]: treesize reduction 28, result has 70.5 percent of original size [2019-11-20 08:02:17,415 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 116 treesize of output 131 [2019-11-20 08:02:17,416 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:17,493 INFO L567 ElimStorePlain]: treesize reduction 112, result has 51.5 percent of original size [2019-11-20 08:02:17,493 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-20 08:02:17,493 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:127, output treesize:119 [2019-11-20 08:02:17,732 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 08:02:17,881 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2019-11-20 08:02:17,881 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:17,882 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 9 case distinctions, treesize of input 154 treesize of output 207 [2019-11-20 08:02:17,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,883 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,884 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,885 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,888 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,890 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,897 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,899 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,901 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 08:02:17,902 INFO L496 ElimStorePlain]: Start of recursive call 2: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 08:02:18,047 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 32 [2019-11-20 08:02:18,048 INFO L567 ElimStorePlain]: treesize reduction 113, result has 36.5 percent of original size [2019-11-20 08:02:18,073 INFO L343 Elim1Store]: treesize reduction 11, result has 42.1 percent of original size [2019-11-20 08:02:18,073 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 50 treesize of output 29 [2019-11-20 08:02:18,074 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 08:02:18,094 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 08:02:18,095 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 08:02:18,095 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:161, output treesize:7 [2019-11-20 08:02:18,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 08:02:18,163 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 08:02:26,857 WARN L191 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 44 [2019-11-20 08:02:26,858 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 08:02:30,566 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-20 08:03:25,330 WARN L194 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2019-11-20 08:03:25,531 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 08:03:25,532 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:153) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:118) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:178) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:162) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:360) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:576) 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2019-11-20 08:03:25,535 INFO L168 Benchmark]: Toolchain (without parser) took 321103.73 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 313.5 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -146.4 MB). Peak memory consumption was 167.1 MB. Max. memory is 11.5 GB. [2019-11-20 08:03:25,536 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 08:03:25,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 563.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-20 08:03:25,536 INFO L168 Benchmark]: Boogie Preprocessor took 84.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-20 08:03:25,537 INFO L168 Benchmark]: RCFGBuilder took 1798.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.1 MB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 11.5 GB. [2019-11-20 08:03:25,537 INFO L168 Benchmark]: TraceAbstraction took 318653.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 178.8 MB). Free memory was 985.1 MB in the beginning and 1.1 GB in the end (delta: -105.9 MB). Peak memory consumption was 72.8 MB. Max. memory is 11.5 GB. [2019-11-20 08:03:25,538 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 563.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -165.7 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 84.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1798.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 985.1 MB in the end (delta: 118.4 MB). Peak memory consumption was 118.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 318653.48 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 178.8 MB). Free memory was 985.1 MB in the beginning and 1.1 GB in the end (delta: -105.9 MB). Peak memory consumption was 72.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...