./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0158-3.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_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0158-3.i -s /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 3898362f0344bf22d4c5daf1ef882d33563fe291 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-19 22:37:31,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:37:31,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:37:31,115 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:37:31,116 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:37:31,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:37:31,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:37:31,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:37:31,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:37:31,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:37:31,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:37:31,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:37:31,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:37:31,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:37:31,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:37:31,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:37:31,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:37:31,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:37:31,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:37:31,149 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:37:31,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:37:31,156 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:37:31,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:37:31,163 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:37:31,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:37:31,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:37:31,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:37:31,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:37:31,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:37:31,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:37:31,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:37:31,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:37:31,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:37:31,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:37:31,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:37:31,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:37:31,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:37:31,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:37:31,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:37:31,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:37:31,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:37:31,178 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:37:31,195 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:37:31,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:37:31,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:37:31,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:37:31,197 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:37:31,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:37:31,197 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:37:31,198 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:37:31,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:37:31,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:37:31,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:37:31,199 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:37:31,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:37:31,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:37:31,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:37:31,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:37:31,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:37:31,200 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:37:31,200 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:37:31,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:37:31,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:37:31,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:37:31,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:37:31,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:37:31,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:37:31,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:37:31,203 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:37:31,203 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:37:31,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:37:31,203 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_872f2b62-dbc7-4415-b330-d6b6de488c70/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 -> 3898362f0344bf22d4c5daf1ef882d33563fe291 [2019-11-19 22:37:31,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:37:31,395 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:37:31,398 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:37:31,402 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:37:31,404 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:37:31,404 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/../../sv-benchmarks/c/memsafety/test-0158-3.i [2019-11-19 22:37:31,471 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/data/7552d4b0d/755dac1f79734e218bc8848702d7ab27/FLAGc226a0c50 [2019-11-19 22:37:31,980 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:37:31,986 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/sv-benchmarks/c/memsafety/test-0158-3.i [2019-11-19 22:37:32,011 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/data/7552d4b0d/755dac1f79734e218bc8848702d7ab27/FLAGc226a0c50 [2019-11-19 22:37:32,217 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/data/7552d4b0d/755dac1f79734e218bc8848702d7ab27 [2019-11-19 22:37:32,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:37:32,221 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:37:32,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:37:32,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:37:32,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:37:32,228 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:37:32" (1/1) ... [2019-11-19 22:37:32,231 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@795151e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:32, skipping insertion in model container [2019-11-19 22:37:32,231 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:37:32" (1/1) ... [2019-11-19 22:37:32,240 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:37:32,294 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:37:32,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:37:32,911 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:37:32,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:37:33,079 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:37:33,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33 WrapperNode [2019-11-19 22:37:33,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:37:33,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:37:33,080 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:37:33,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:37:33,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... [2019-11-19 22:37:33,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:37:33,193 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:37:33,193 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:37:33,193 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:37:33,194 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:33,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:37:33,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:37:33,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 22:37:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 22:37:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-19 22:37:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-19 22:37:33,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-19 22:37:33,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:37:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 22:37:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 22:37:33,255 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 22:37:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 22:37:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 22:37:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 22:37:33,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 22:37:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 22:37:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 22:37:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 22:37:33,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 22:37:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 22:37:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 22:37:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 22:37:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 22:37:33,258 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 22:37:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 22:37:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 22:37:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 22:37:33,259 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-19 22:37:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-19 22:37:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-19 22:37:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 22:37:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 22:37:33,260 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 22:37:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 22:37:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 22:37:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 22:37:33,261 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 22:37:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 22:37:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 22:37:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 22:37:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 22:37:33,262 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 22:37:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 22:37:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 22:37:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 22:37:33,263 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 22:37:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 22:37:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 22:37:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 22:37:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 22:37:33,264 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 22:37:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 22:37:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 22:37:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 22:37:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 22:37:33,265 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 22:37:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 22:37:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 22:37:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 22:37:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 22:37:33,266 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 22:37:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 22:37:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 22:37:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 22:37:33,267 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 22:37:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 22:37:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 22:37:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 22:37:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 22:37:33,268 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 22:37:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 22:37:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 22:37:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 22:37:33,269 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 22:37:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 22:37:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 22:37:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 22:37:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 22:37:33,270 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 22:37:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 22:37:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 22:37:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 22:37:33,271 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 22:37:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 22:37:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 22:37:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 22:37:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 22:37:33,272 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 22:37:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 22:37:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 22:37:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 22:37:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 22:37:33,273 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 22:37:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 22:37:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 22:37:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 22:37:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 22:37:33,274 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 22:37:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 22:37:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 22:37:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 22:37:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 22:37:33,275 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 22:37:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 22:37:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 22:37:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 22:37:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 22:37:33,276 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 22:37:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 22:37:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 22:37:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 22:37:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 22:37:33,277 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 22:37:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 22:37:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 22:37:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 22:37:33,278 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-19 22:37:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-11-19 22:37:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2019-11-19 22:37:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-19 22:37:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-11-19 22:37:33,279 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2019-11-19 22:37:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2019-11-19 22:37:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2019-11-19 22:37:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2019-11-19 22:37:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2019-11-19 22:37:33,280 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-11-19 22:37:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2019-11-19 22:37:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2019-11-19 22:37:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2019-11-19 22:37:33,281 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2019-11-19 22:37:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2019-11-19 22:37:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2019-11-19 22:37:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2019-11-19 22:37:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2019-11-19 22:37:33,282 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2019-11-19 22:37:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2019-11-19 22:37:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2019-11-19 22:37:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2019-11-19 22:37:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2019-11-19 22:37:33,283 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2019-11-19 22:37:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2019-11-19 22:37:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2019-11-19 22:37:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-11-19 22:37:33,284 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2019-11-19 22:37:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2019-11-19 22:37:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2019-11-19 22:37:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2019-11-19 22:37:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2019-11-19 22:37:33,285 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2019-11-19 22:37:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2019-11-19 22:37:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure index [2019-11-19 22:37:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2019-11-19 22:37:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2019-11-19 22:37:33,286 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2019-11-19 22:37:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2019-11-19 22:37:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2019-11-19 22:37:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2019-11-19 22:37:33,287 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2019-11-19 22:37:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2019-11-19 22:37:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2019-11-19 22:37:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2019-11-19 22:37:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2019-11-19 22:37:33,288 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2019-11-19 22:37:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2019-11-19 22:37:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2019-11-19 22:37:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2019-11-19 22:37:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:37:33,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 22:37:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:37:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 22:37:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 22:37:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2019-11-19 22:37:33,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:37:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:37:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:37:33,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2019-11-19 22:37:33,979 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:37:33,980 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-19 22:37:33,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:37:33 BoogieIcfgContainer [2019-11-19 22:37:33,981 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:37:33,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:37:33,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:37:33,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:37:33,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:37:32" (1/3) ... [2019-11-19 22:37:33,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384a7e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:37:33, skipping insertion in model container [2019-11-19 22:37:33,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:37:33" (2/3) ... [2019-11-19 22:37:33,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@384a7e2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:37:33, skipping insertion in model container [2019-11-19 22:37:33,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:37:33" (3/3) ... [2019-11-19 22:37:33,989 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0158-3.i [2019-11-19 22:37:34,001 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:37:34,009 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2019-11-19 22:37:34,022 INFO L249 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2019-11-19 22:37:34,049 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:37:34,049 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:37:34,049 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:37:34,049 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:37:34,049 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:37:34,049 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:37:34,050 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:37:34,050 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:37:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2019-11-19 22:37:34,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:37:34,074 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:34,074 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:34,075 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:34,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:34,082 INFO L82 PathProgramCache]: Analyzing trace with hash -202007183, now seen corresponding path program 1 times [2019-11-19 22:37:34,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:34,095 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1808504316] [2019-11-19 22:37:34,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:34,467 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:37:34,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:34,591 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-19 22:37:34,591 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 19 treesize of output 18 [2019-11-19 22:37:34,592 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:34,608 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:34,612 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. [2019-11-19 22:37:34,613 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:15 [2019-11-19 22:37:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:34,643 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:34,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:34,681 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1808504316] [2019-11-19 22:37:34,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:34,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 22:37:34,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647081765] [2019-11-19 22:37:34,688 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:37:34,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:34,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:37:34,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:37:34,709 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2019-11-19 22:37:34,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:34,853 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2019-11-19 22:37:34,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:37:34,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-19 22:37:34,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:34,864 INFO L225 Difference]: With dead ends: 34 [2019-11-19 22:37:34,864 INFO L226 Difference]: Without dead ends: 31 [2019-11-19 22:37:34,869 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:37:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-19 22:37:34,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-11-19 22:37:34,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-11-19 22:37:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 30 transitions. [2019-11-19 22:37:34,902 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 30 transitions. Word has length 7 [2019-11-19 22:37:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:34,903 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 30 transitions. [2019-11-19 22:37:34,903 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:37:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 30 transitions. [2019-11-19 22:37:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:37:34,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:34,904 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:35,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:35,106 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:35,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:35,107 INFO L82 PathProgramCache]: Analyzing trace with hash -202007182, now seen corresponding path program 1 times [2019-11-19 22:37:35,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:35,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1670430025] [2019-11-19 22:37:35,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:35,419 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:37:35,421 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:35,436 INFO L392 ElimStorePlain]: Different costs {0=[|v_#length_17|], 1=[|v_#valid_34|]} [2019-11-19 22:37:35,450 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:35,452 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2019-11-19 22:37:35,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:35,471 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:35,476 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:35,482 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 5 treesize of output 3 [2019-11-19 22:37:35,483 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:35,502 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:35,503 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. [2019-11-19 22:37:35,503 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:14 [2019-11-19 22:37:35,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:35,530 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:35,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:35,600 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1670430025] [2019-11-19 22:37:35,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:35,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 22:37:35,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317588095] [2019-11-19 22:37:35,602 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 22:37:35,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:35,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 22:37:35,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:37:35,603 INFO L87 Difference]: Start difference. First operand 31 states and 30 transitions. Second operand 4 states. [2019-11-19 22:37:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:35,692 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2019-11-19 22:37:35,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:37:35,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-19 22:37:35,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:35,694 INFO L225 Difference]: With dead ends: 26 [2019-11-19 22:37:35,694 INFO L226 Difference]: Without dead ends: 26 [2019-11-19 22:37:35,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 22:37:35,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-19 22:37:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-19 22:37:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-19 22:37:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2019-11-19 22:37:35,701 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 7 [2019-11-19 22:37:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:35,701 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2019-11-19 22:37:35,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 22:37:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2019-11-19 22:37:35,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 22:37:35,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:35,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:35,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:35,908 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:35,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:35,909 INFO L82 PathProgramCache]: Analyzing trace with hash -727987657, now seen corresponding path program 1 times [2019-11-19 22:37:35,910 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:35,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1388317314] [2019-11-19 22:37:35,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:36,266 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:37:36,267 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:36,288 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 [2019-11-19 22:37:36,289 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,299 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,300 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,300 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2019-11-19 22:37:36,333 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:36,335 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 [2019-11-19 22:37:36,336 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,352 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,353 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,353 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2019-11-19 22:37:36,403 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:36,406 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:36,408 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:36,410 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,411 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 1 case distinctions, treesize of input 36 treesize of output 23 [2019-11-19 22:37:36,412 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,430 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,430 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,430 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:39, output treesize:20 [2019-11-19 22:37:36,440 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,441 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-11-19 22:37:36,442 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,452 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,453 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:36,453 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2019-11-19 22:37:36,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:36,468 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:36,495 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:36,499 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:36,500 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:36,500 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-19 22:37:36,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:36,559 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1388317314] [2019-11-19 22:37:36,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:36,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2019-11-19 22:37:36,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076588633] [2019-11-19 22:37:36,560 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-19 22:37:36,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:36,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-19 22:37:36,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-11-19 22:37:36,561 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 8 states. [2019-11-19 22:37:36,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:36,785 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2019-11-19 22:37:36,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-19 22:37:36,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-19 22:37:36,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:36,787 INFO L225 Difference]: With dead ends: 25 [2019-11-19 22:37:36,787 INFO L226 Difference]: Without dead ends: 25 [2019-11-19 22:37:36,788 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-11-19 22:37:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-19 22:37:36,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-19 22:37:36,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-19 22:37:36,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2019-11-19 22:37:36,793 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 13 [2019-11-19 22:37:36,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:36,793 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2019-11-19 22:37:36,793 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-19 22:37:36,794 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2019-11-19 22:37:36,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 22:37:36,794 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:36,794 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:37,001 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:37,002 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:37,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:37,002 INFO L82 PathProgramCache]: Analyzing trace with hash -1092780829, now seen corresponding path program 1 times [2019-11-19 22:37:37,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:37,003 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [407758392] [2019-11-19 22:37:37,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:37,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:37:37,331 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:37,379 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 [2019-11-19 22:37:37,380 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,403 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,404 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,404 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-11-19 22:37:37,453 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:37,455 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 [2019-11-19 22:37:37,455 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,477 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,477 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,477 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2019-11-19 22:37:37,536 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:37,540 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:37,544 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:37,546 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,547 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 1 case distinctions, treesize of input 36 treesize of output 23 [2019-11-19 22:37:37,548 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,575 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,576 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:23 [2019-11-19 22:37:37,593 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,593 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2019-11-19 22:37:37,594 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,604 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,604 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:37,604 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:7 [2019-11-19 22:37:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:37,647 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:37,712 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:37,720 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:37,721 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:37,721 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:12 [2019-11-19 22:37:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:37,798 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [407758392] [2019-11-19 22:37:37,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:37,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2019-11-19 22:37:37,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58675659] [2019-11-19 22:37:37,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:37:37,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:37,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:37:37,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:37:37,800 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 10 states. [2019-11-19 22:37:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:38,085 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2019-11-19 22:37:38,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 22:37:38,085 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2019-11-19 22:37:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:38,086 INFO L225 Difference]: With dead ends: 24 [2019-11-19 22:37:38,086 INFO L226 Difference]: Without dead ends: 24 [2019-11-19 22:37:38,088 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:37:38,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-19 22:37:38,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-19 22:37:38,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 22:37:38,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2019-11-19 22:37:38,093 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 14 [2019-11-19 22:37:38,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:38,093 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2019-11-19 22:37:38,093 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:37:38,094 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2019-11-19 22:37:38,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-19 22:37:38,094 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:38,094 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:38,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:38,295 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:38,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:38,296 INFO L82 PathProgramCache]: Analyzing trace with hash 483532729, now seen corresponding path program 1 times [2019-11-19 22:37:38,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:38,297 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1768969382] [2019-11-19 22:37:38,297 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:38,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-19 22:37:38,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:38,567 INFO L343 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2019-11-19 22:37:38,567 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 1 case distinctions, treesize of input 9 treesize of output 11 [2019-11-19 22:37:38,567 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,575 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:38,575 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,576 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:14 [2019-11-19 22:37:38,601 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 [2019-11-19 22:37:38,601 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,623 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:38,624 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,625 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:20 [2019-11-19 22:37:38,654 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:38,656 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2019-11-19 22:37:38,657 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,668 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:38,669 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,669 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:33, output treesize:29 [2019-11-19 22:37:38,706 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:38,708 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:38,709 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:38,711 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 38 treesize of output 25 [2019-11-19 22:37:38,712 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,739 INFO L567 ElimStorePlain]: treesize reduction 5, result has 85.3 percent of original size [2019-11-19 22:37:38,739 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,740 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:29 [2019-11-19 22:37:38,759 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2019-11-19 22:37:38,760 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,767 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:38,768 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:38,768 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:33, output treesize:15 [2019-11-19 22:37:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:38,786 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:38,838 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:38,847 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:38,848 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:38,848 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2019-11-19 22:37:38,902 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 17 treesize of output 15 [2019-11-19 22:37:38,907 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,921 INFO L567 ElimStorePlain]: treesize reduction 19, result has 20.8 percent of original size [2019-11-19 22:37:38,922 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,928 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:38,929 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:38,929 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:26, output treesize:14 [2019-11-19 22:37:38,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:38,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768969382] [2019-11-19 22:37:38,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:38,953 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-19 22:37:38,953 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925413033] [2019-11-19 22:37:38,953 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 22:37:38,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:38,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 22:37:38,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-19 22:37:38,954 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand 9 states. [2019-11-19 22:37:39,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:39,123 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2019-11-19 22:37:39,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 22:37:39,124 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2019-11-19 22:37:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:39,125 INFO L225 Difference]: With dead ends: 23 [2019-11-19 22:37:39,125 INFO L226 Difference]: Without dead ends: 23 [2019-11-19 22:37:39,125 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2019-11-19 22:37:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-19 22:37:39,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2019-11-19 22:37:39,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-19 22:37:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2019-11-19 22:37:39,129 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 15 [2019-11-19 22:37:39,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:39,129 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2019-11-19 22:37:39,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 22:37:39,129 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2019-11-19 22:37:39,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 22:37:39,130 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:39,130 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:39,331 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:39,331 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:39,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:39,332 INFO L82 PathProgramCache]: Analyzing trace with hash 2104612773, now seen corresponding path program 1 times [2019-11-19 22:37:39,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:39,332 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2036407431] [2019-11-19 22:37:39,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:39,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:39,528 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 22:37:39,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:39,559 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:39,560 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 27 treesize of output 11 [2019-11-19 22:37:39,560 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:39,565 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:39,565 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:39,566 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:30, output treesize:11 [2019-11-19 22:37:39,569 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 [2019-11-19 22:37:39,570 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:39,572 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:39,572 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:39,572 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-11-19 22:37:39,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:39,584 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:39,617 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:39,624 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:39,624 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:39,625 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:17 [2019-11-19 22:37:39,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:39,659 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2036407431] [2019-11-19 22:37:39,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:39,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-11-19 22:37:39,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635617888] [2019-11-19 22:37:39,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 22:37:39,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:39,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 22:37:39,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2019-11-19 22:37:39,661 INFO L87 Difference]: Start difference. First operand 23 states and 22 transitions. Second operand 10 states. [2019-11-19 22:37:39,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:39,830 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-11-19 22:37:39,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:37:39,831 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-19 22:37:39,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:39,832 INFO L225 Difference]: With dead ends: 22 [2019-11-19 22:37:39,833 INFO L226 Difference]: Without dead ends: 22 [2019-11-19 22:37:39,833 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-11-19 22:37:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-19 22:37:39,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-19 22:37:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-19 22:37:39,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2019-11-19 22:37:39,836 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 16 [2019-11-19 22:37:39,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:39,836 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2019-11-19 22:37:39,837 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 22:37:39,837 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2019-11-19 22:37:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-19 22:37:39,837 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:39,837 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:40,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:40,038 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:40,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:40,039 INFO L82 PathProgramCache]: Analyzing trace with hash 818486587, now seen corresponding path program 1 times [2019-11-19 22:37:40,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:40,039 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1143441028] [2019-11-19 22:37:40,039 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:37:40,273 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 22:37:40,274 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:37:40,308 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 [2019-11-19 22:37:40,308 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,323 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,323 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:14 [2019-11-19 22:37:40,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:40,354 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 [2019-11-19 22:37:40,354 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,370 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,371 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,371 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2019-11-19 22:37:40,461 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:40,462 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:40,463 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-19 22:37:40,464 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,464 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 1 case distinctions, treesize of input 43 treesize of output 26 [2019-11-19 22:37:40,465 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,479 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,479 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,479 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:30 [2019-11-19 22:37:40,490 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,491 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2019-11-19 22:37:40,491 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,500 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,501 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:37:40,501 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:10 [2019-11-19 22:37:40,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:40,546 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:37:40,643 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:40,654 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:37:40,655 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-19 22:37:40,655 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:17 [2019-11-19 22:37:40,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:37:40,712 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1143441028] [2019-11-19 22:37:40,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:37:40,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 5] imperfect sequences [] total 13 [2019-11-19 22:37:40,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165702210] [2019-11-19 22:37:40,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-19 22:37:40,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:37:40,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-19 22:37:40,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2019-11-19 22:37:40,713 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand 14 states. [2019-11-19 22:37:41,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:37:41,144 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-19 22:37:41,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-19 22:37:41,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2019-11-19 22:37:41,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:37:41,145 INFO L225 Difference]: With dead ends: 21 [2019-11-19 22:37:41,145 INFO L226 Difference]: Without dead ends: 21 [2019-11-19 22:37:41,145 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2019-11-19 22:37:41,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-19 22:37:41,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-19 22:37:41,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-19 22:37:41,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2019-11-19 22:37:41,148 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 17 [2019-11-19 22:37:41,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:37:41,148 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2019-11-19 22:37:41,148 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-19 22:37:41,149 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2019-11-19 22:37:41,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-19 22:37:41,149 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:37:41,149 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:37:41,349 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:41,350 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr8REQUIRES_VIOLATION, mainErr14ASSERT_VIOLATIONMEMORY_FREE, mainErr9REQUIRES_VIOLATION, mainErr13ASSERT_VIOLATIONMEMORY_FREE, mainErr5REQUIRES_VIOLATION, mainErr12ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr15ASSERT_VIOLATIONMEMORY_FREE, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr10ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr11ASSERT_VIOLATIONMEMORY_FREE, mainErr4REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-11-19 22:37:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:37:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash -396719513, now seen corresponding path program 1 times [2019-11-19 22:37:41,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:37:41,351 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1240702426] [2019-11-19 22:37:41,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/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 [2019-11-19 22:37:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:37:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:37:41,632 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 22:37:41,633 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:37:41,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:37:41,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:37:41 BoogieIcfgContainer [2019-11-19 22:37:41,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:37:41,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:37:41,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:37:41,862 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:37:41,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:37:33" (3/4) ... [2019-11-19 22:37:41,870 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:37:41,917 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_872f2b62-dbc7-4415-b330-d6b6de488c70/bin/uautomizer/witness.graphml [2019-11-19 22:37:41,917 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:37:41,918 INFO L168 Benchmark]: Toolchain (without parser) took 9697.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 179.8 MB). Free memory was 939.4 MB in the beginning and 1.0 GB in the end (delta: -102.0 MB). Peak memory consumption was 77.8 MB. Max. memory is 11.5 GB. [2019-11-19 22:37:41,919 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:37:41,919 INFO L168 Benchmark]: CACSL2BoogieTranslator took 857.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:37:41,920 INFO L168 Benchmark]: Boogie Preprocessor took 104.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:37:41,920 INFO L168 Benchmark]: RCFGBuilder took 788.23 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:37:41,921 INFO L168 Benchmark]: TraceAbstraction took 7879.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 8.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:37:41,921 INFO L168 Benchmark]: Witness Printer took 55.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:37:41,923 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 857.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.4 MB in the beginning and 1.1 GB in the end (delta: -172.2 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 104.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 788.23 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: 60.0 MB). Peak memory consumption was 60.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7879.49 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 8.2 MB). Peak memory consumption was 48.0 MB. Max. memory is 11.5 GB. * Witness Printer took 55.22 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 644]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L631-L638] union { void *p0; struct { char c[2]; void *p1; void *p2; } str; } data; [L639] data.p0 = malloc(37U) VAL [data={20713:0}, malloc(37U)={16617:0}] [L640] data.str.p2 = &data VAL [data={20713:0}, malloc(37U)={16617:0}] [L641] EXPR data.p0 VAL [data={20713:0}, data.p0={16617:0}, malloc(37U)={16617:0}] [L641] void *ptr = data.p0; [L642] data.str.c[1] = sizeof data.str.p1 VAL [data={20713:0}, malloc(37U)={16617:0}, ptr={16617:0}] [L643] EXPR data.p0 VAL [data={20713:0}, data.p0={16617:0}, malloc(37U)={16617:0}, ptr={16617:0}] [L643] free(data.p0) VAL [data={20713:0}, data.p0={16617:0}, malloc(37U)={16617:0}, ptr={16617:0}] [L643] free(data.p0) VAL [data={20713:0}, data.p0={16617:0}, malloc(37U)={16617:0}, ptr={16617:0}] [L643] free(data.p0) [L644] free(ptr) VAL [data={20713:0}, malloc(37U)={16617:0}, ptr={16617:0}] [L644] free(ptr) VAL [data={20713:0}, malloc(37U)={16617:0}, ptr={16617:0}] [L644] free(ptr) VAL [data={20713:0}, malloc(37U)={16617:0}, ptr={16617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 54 locations, 17 error locations. Result: UNSAFE, OverallTime: 7.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 205 SDslu, 169 SDs, 0 SdLazy, 236 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 189 GetRequests, 118 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 164 ConstructedInterpolants, 6 QuantifiedInterpolants, 15356 SizeOfPredicates, 28 NumberOfNonLiveVariables, 447 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...