./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.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_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 3444bab46e3acd40907f623c997f9115bc97543a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:50:24,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:50:24,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:50:24,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:50:24,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:50:24,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:50:24,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:50:24,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:50:24,219 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:50:24,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:50:24,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:50:24,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:50:24,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:50:24,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:50:24,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:50:24,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:50:24,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:50:24,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:50:24,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:50:24,238 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:50:24,241 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:50:24,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:50:24,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:50:24,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:50:24,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:50:24,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:50:24,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:50:24,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:50:24,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:50:24,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:50:24,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:50:24,251 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:50:24,251 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:50:24,252 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:50:24,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:50:24,253 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:50:24,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:50:24,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:50:24,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:50:24,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:50:24,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:50:24,255 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 22:50:24,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:50:24,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:50:24,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:50:24,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:50:24,269 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:50:24,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:50:24,269 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 22:50:24,269 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:50:24,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:50:24,269 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 22:50:24,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:50:24,270 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 22:50:24,270 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 22:50:24,270 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 22:50:24,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 22:50:24,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 22:50:24,271 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 22:50:24,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 22:50:24,271 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:50:24,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:50:24,271 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:50:24,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 22:50:24,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 22:50:24,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 22:50:24,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:50:24,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 22:50:24,272 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 22:50:24,273 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 22:50:24,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 22:50:24,273 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_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 -> 3444bab46e3acd40907f623c997f9115bc97543a [2019-11-19 22:50:24,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:50:24,434 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:50:24,437 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:50:24,438 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:50:24,439 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:50:24,439 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-11-19 22:50:24,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/data/5c022b1b0/2e5a083bc53c486bb5473e3c914b7587/FLAGaf58c0e11 [2019-11-19 22:50:24,981 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:50:24,982 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-11-19 22:50:25,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/data/5c022b1b0/2e5a083bc53c486bb5473e3c914b7587/FLAGaf58c0e11 [2019-11-19 22:50:25,508 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/data/5c022b1b0/2e5a083bc53c486bb5473e3c914b7587 [2019-11-19 22:50:25,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:50:25,511 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 22:50:25,512 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:50:25,512 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:50:25,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:50:25,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:50:25" (1/1) ... [2019-11-19 22:50:25,521 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205e4e69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:25, skipping insertion in model container [2019-11-19 22:50:25,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:50:25" (1/1) ... [2019-11-19 22:50:25,526 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:50:25,564 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:50:25,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:50:25,913 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:50:25,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:50:26,010 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:50:26,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26 WrapperNode [2019-11-19 22:50:26,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:50:26,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:50:26,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:50:26,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:50:26,022 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... [2019-11-19 22:50:26,060 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:50:26,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:50:26,061 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:50:26,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:50:26,062 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:26,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 22:50:26,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:50:26,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 22:50:26,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 22:50:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-19 22:50:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-19 22:50:26,131 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-19 22:50:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 22:50:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 22:50:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 22:50:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 22:50:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 22:50:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 22:50:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 22:50:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 22:50:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 22:50:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 22:50:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 22:50:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 22:50:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 22:50:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 22:50:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 22:50:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 22:50:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 22:50:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 22:50:26,135 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 22:50:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-19 22:50:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-19 22:50:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-19 22:50:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 22:50:26,136 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 22:50:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 22:50:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 22:50:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 22:50:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 22:50:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 22:50:26,137 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 22:50:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 22:50:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 22:50:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 22:50:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 22:50:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 22:50:26,138 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 22:50:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 22:50:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 22:50:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 22:50:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 22:50:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 22:50:26,139 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 22:50:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 22:50:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 22:50:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 22:50:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 22:50:26,140 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 22:50:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 22:50:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 22:50:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 22:50:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 22:50:26,141 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 22:50:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 22:50:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 22:50:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 22:50:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 22:50:26,142 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 22:50:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 22:50:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 22:50:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 22:50:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 22:50:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 22:50:26,143 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 22:50:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 22:50:26,144 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 22:50:26,145 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 22:50:26,145 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 22:50:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 22:50:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 22:50:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 22:50:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 22:50:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 22:50:26,147 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 22:50:26,148 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 22:50:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 22:50:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 22:50:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 22:50:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 22:50:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 22:50:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 22:50:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 22:50:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 22:50:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 22:50:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 22:50:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 22:50:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 22:50:26,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:50:26,548 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:50:26,548 INFO L285 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-19 22:50:26,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:50:26 BoogieIcfgContainer [2019-11-19 22:50:26,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:50:26,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 22:50:26,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 22:50:26,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 22:50:26,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:50:25" (1/3) ... [2019-11-19 22:50:26,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512519b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:50:26, skipping insertion in model container [2019-11-19 22:50:26,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:50:26" (2/3) ... [2019-11-19 22:50:26,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512519b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:50:26, skipping insertion in model container [2019-11-19 22:50:26,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:50:26" (3/3) ... [2019-11-19 22:50:26,562 INFO L109 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2019-11-19 22:50:26,571 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 22:50:26,585 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-19 22:50:26,595 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-19 22:50:26,614 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 22:50:26,614 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 22:50:26,615 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 22:50:26,615 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:50:26,616 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:50:26,616 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 22:50:26,616 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:50:26,625 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 22:50:26,641 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-19 22:50:26,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-19 22:50:26,649 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:26,650 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:26,651 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:26,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:26,657 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2019-11-19 22:50:26,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:26,667 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [263516492] [2019-11-19 22:50:26,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:26,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:26,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:50:26,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:26,885 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 22:50:26,885 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:26,907 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 22:50:26,908 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [263516492] [2019-11-19 22:50:26,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:26,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:50:26,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442481864] [2019-11-19 22:50:26,916 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:50:26,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:26,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:50:26,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:26,933 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2019-11-19 22:50:26,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:26,951 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-19 22:50:26,951 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:50:26,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-11-19 22:50:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:26,960 INFO L225 Difference]: With dead ends: 29 [2019-11-19 22:50:26,960 INFO L226 Difference]: Without dead ends: 26 [2019-11-19 22:50:26,962 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:26,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-19 22:50:26,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-19 22:50:26,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-19 22:50:26,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-19 22:50:26,993 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2019-11-19 22:50:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:26,994 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-19 22:50:26,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:50:26,994 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-19 22:50:26,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-19 22:50:26,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:26,995 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:27,195 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:27,197 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:27,198 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2019-11-19 22:50:27,198 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:27,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [364975732] [2019-11-19 22:50:27,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:27,387 INFO L255 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:50:27,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:27,416 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 22:50:27,416 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:27,436 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 22:50:27,436 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [364975732] [2019-11-19 22:50:27,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:27,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2019-11-19 22:50:27,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742133560] [2019-11-19 22:50:27,438 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:50:27,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:27,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:50:27,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:50:27,439 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 5 states. [2019-11-19 22:50:27,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:27,482 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-19 22:50:27,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:50:27,483 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-19 22:50:27,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:27,484 INFO L225 Difference]: With dead ends: 25 [2019-11-19 22:50:27,484 INFO L226 Difference]: Without dead ends: 25 [2019-11-19 22:50:27,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:50:27,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-19 22:50:27,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-19 22:50:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-19 22:50:27,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-19 22:50:27,489 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2019-11-19 22:50:27,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:27,489 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-19 22:50:27,489 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:50:27,489 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-19 22:50:27,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-19 22:50:27,490 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:27,490 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:27,698 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:27,698 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:27,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:27,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2019-11-19 22:50:27,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:27,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2093866468] [2019-11-19 22:50:27,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:27,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:50:27,856 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:27,889 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:50:27,890 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:50:27,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:50:27,894 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:50:27,894 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:50:27,899 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 22:50:27,899 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:50:27,909 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2093866468] [2019-11-19 22:50:27,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:27,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:50:27,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225750043] [2019-11-19 22:50:27,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:50:27,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:27,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:50:27,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:27,911 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 3 states. [2019-11-19 22:50:27,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:27,935 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-19 22:50:27,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:50:27,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-11-19 22:50:27,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:27,937 INFO L225 Difference]: With dead ends: 24 [2019-11-19 22:50:27,937 INFO L226 Difference]: Without dead ends: 24 [2019-11-19 22:50:27,937 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:27,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-19 22:50:27,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-19 22:50:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-19 22:50:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-19 22:50:27,941 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2019-11-19 22:50:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:27,941 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-19 22:50:27,941 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:50:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-19 22:50:27,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-19 22:50:27,942 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:27,942 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:28,149 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:28,149 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:28,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:28,150 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2019-11-19 22:50:28,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:28,150 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [767740312] [2019-11-19 22:50:28,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:28,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:50:28,313 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:28,323 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 22:50:28,323 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:28,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 22:50:28,336 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [767740312] [2019-11-19 22:50:28,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:28,336 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:50:28,336 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002135845] [2019-11-19 22:50:28,337 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:50:28,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:28,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:50:28,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:28,338 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 3 states. [2019-11-19 22:50:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:28,353 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-19 22:50:28,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:50:28,356 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-19 22:50:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:28,357 INFO L225 Difference]: With dead ends: 22 [2019-11-19 22:50:28,357 INFO L226 Difference]: Without dead ends: 22 [2019-11-19 22:50:28,357 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-19 22:50:28,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-19 22:50:28,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-19 22:50:28,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-19 22:50:28,366 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2019-11-19 22:50:28,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:28,367 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-19 22:50:28,367 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:50:28,367 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-19 22:50:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-19 22:50:28,368 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:28,368 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:28,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:28,573 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:28,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:28,574 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2019-11-19 22:50:28,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:28,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [793821828] [2019-11-19 22:50:28,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:28,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:28,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 22:50:28,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:28,827 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 22:50:28,828 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:28,858 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 22:50:28,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [793821828] [2019-11-19 22:50:28,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:28,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 4 [2019-11-19 22:50:28,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643445164] [2019-11-19 22:50:28,860 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-19 22:50:28,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:28,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-19 22:50:28,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:50:28,861 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 5 states. [2019-11-19 22:50:28,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:28,919 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-19 22:50:28,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 22:50:28,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-19 22:50:28,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:28,921 INFO L225 Difference]: With dead ends: 20 [2019-11-19 22:50:28,921 INFO L226 Difference]: Without dead ends: 20 [2019-11-19 22:50:28,921 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 22:50:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-19 22:50:28,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-19 22:50:28,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-19 22:50:28,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-19 22:50:28,925 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2019-11-19 22:50:28,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:28,925 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-19 22:50:28,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-19 22:50:28,925 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-19 22:50:28,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 22:50:28,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:28,926 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:29,129 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:29,129 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:29,130 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2019-11-19 22:50:29,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:29,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1158765264] [2019-11-19 22:50:29,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:29,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 22:50:29,303 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:29,335 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:50:29,336 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-11-19 22:50:29,336 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:50:29,361 INFO L567 ElimStorePlain]: treesize reduction 10, result has 60.0 percent of original size [2019-11-19 22:50:29,362 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:50:29,362 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:5 [2019-11-19 22:50:29,370 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 22:50:29,370 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:29,385 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 22:50:29,385 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1158765264] [2019-11-19 22:50:29,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:29,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 22:50:29,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753408900] [2019-11-19 22:50:29,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 22:50:29,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:29,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 22:50:29,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:29,387 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 3 states. [2019-11-19 22:50:29,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:29,422 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-19 22:50:29,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 22:50:29,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-19 22:50:29,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:29,424 INFO L225 Difference]: With dead ends: 22 [2019-11-19 22:50:29,424 INFO L226 Difference]: Without dead ends: 22 [2019-11-19 22:50:29,424 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 22:50:29,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-19 22:50:29,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-19 22:50:29,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-19 22:50:29,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-19 22:50:29,428 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-19 22:50:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:29,428 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-19 22:50:29,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 22:50:29,431 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-19 22:50:29,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-19 22:50:29,432 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:29,433 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:29,633 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:29,633 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:29,634 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2019-11-19 22:50:29,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:29,634 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1764492785] [2019-11-19 22:50:29,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 22:50:29,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-19 22:50:29,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 22:50:29,824 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 22:50:29,824 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 22:50:29,834 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 22:50:29,834 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 22:50:29,834 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 22:50:32,063 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 22:50:32,063 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 22:50:43,192 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 22:50:43,193 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1764492785] [2019-11-19 22:50:43,193 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 22:50:43,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 12 [2019-11-19 22:50:43,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121801520] [2019-11-19 22:50:43,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-19 22:50:43,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 22:50:43,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-19 22:50:43,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=111, Unknown=5, NotChecked=0, Total=156 [2019-11-19 22:50:43,196 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 13 states. [2019-11-19 22:50:57,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 22:50:57,681 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-11-19 22:50:57,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-19 22:50:57,682 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 14 [2019-11-19 22:50:57,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 22:50:57,682 INFO L225 Difference]: With dead ends: 22 [2019-11-19 22:50:57,682 INFO L226 Difference]: Without dead ends: 17 [2019-11-19 22:50:57,683 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=63, Invalid=170, Unknown=7, NotChecked=0, Total=240 [2019-11-19 22:50:57,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-19 22:50:57,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-19 22:50:57,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-19 22:50:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2019-11-19 22:50:57,686 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2019-11-19 22:50:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 22:50:57,687 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2019-11-19 22:50:57,687 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-19 22:50:57,687 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2019-11-19 22:50:57,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-19 22:50:57,687 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 22:50:57,687 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 22:50:57,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:57,889 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-19 22:50:57,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:50:57,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2019-11-19 22:50:57,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 22:50:57,890 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [526830515] [2019-11-19 22:50:57,890 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/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 22:50:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:50:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:50:58,134 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 22:50:58,135 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 22:50:58,335 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 22:50:58,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 10:50:58 BoogieIcfgContainer [2019-11-19 22:50:58,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 22:50:58,367 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:50:58,367 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:50:58,367 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:50:58,368 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:50:26" (3/4) ... [2019-11-19 22:50:58,371 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 22:50:58,428 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_60bd86a4-dc8e-4d98-9978-c75bb81fd459/bin/uautomizer/witness.graphml [2019-11-19 22:50:58,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:50:58,430 INFO L168 Benchmark]: Toolchain (without parser) took 32918.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 187.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -159.7 MB). Peak memory consumption was 28.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:50:58,431 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:50:58,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:50:58,432 INFO L168 Benchmark]: Boogie Preprocessor took 49.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-19 22:50:58,433 INFO L168 Benchmark]: RCFGBuilder took 488.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:50:58,434 INFO L168 Benchmark]: TraceAbstraction took 31816.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -69.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-19 22:50:58,434 INFO L168 Benchmark]: Witness Printer took 61.93 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: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. [2019-11-19 22:50:58,437 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 498.64 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -150.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.40 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 488.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 31816.26 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 77.6 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -69.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. * Witness Printer took 61.93 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: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=2, malloc(sizeof(*y))={2:0}, x={0:0}, y={2:0}] [L547] free(y) VAL [adressY=2, malloc(sizeof(*y))={2:0}, x={0:0}, y={2:0}] [L547] free(y) VAL [adressY=2, malloc(sizeof(*y))={2:0}, x={0:0}, y={2:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L550] COND TRUE adressX == adressY VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L552] free(x) VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L552] free(x) VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L552] free(x) [L554] free(x) VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L554] free(x) VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L554] free(x) VAL [adressX=2, adressY=2, malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 45 locations, 10 error locations. Result: UNSAFE, OverallTime: 31.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 108 SDslu, 60 SDs, 0 SdLazy, 118 SolverSat, 25 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 144 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 17.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.2s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 134 ConstructedInterpolants, 8 QuantifiedInterpolants, 7858 SizeOfPredicates, 20 NumberOfNonLiveVariables, 289 ConjunctsInSsa, 39 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...