./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/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 dc1c46fafaf84313f7931d3a97aa18589b3f536c .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 --- This is Ultimate 0.1.24-cad4683 [2019-11-15 20:47:13,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-15 20:47:13,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-15 20:47:13,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-15 20:47:13,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-15 20:47:13,223 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-15 20:47:13,225 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-15 20:47:13,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-15 20:47:13,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-15 20:47:13,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-15 20:47:13,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-15 20:47:13,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-15 20:47:13,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-15 20:47:13,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-15 20:47:13,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-15 20:47:13,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-15 20:47:13,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-15 20:47:13,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-15 20:47:13,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-15 20:47:13,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-15 20:47:13,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-15 20:47:13,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-15 20:47:13,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-15 20:47:13,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-15 20:47:13,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-15 20:47:13,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-15 20:47:13,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-15 20:47:13,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-15 20:47:13,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-15 20:47:13,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-15 20:47:13,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-15 20:47:13,280 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-15 20:47:13,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-15 20:47:13,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-15 20:47:13,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-15 20:47:13,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-15 20:47:13,284 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-15 20:47:13,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-15 20:47:13,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-15 20:47:13,285 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-15 20:47:13,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-15 20:47:13,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-15 20:47:13,312 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-15 20:47:13,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-15 20:47:13,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-15 20:47:13,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-15 20:47:13,324 INFO L138 SettingsManager]: * Use SBE=true [2019-11-15 20:47:13,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-15 20:47:13,324 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-15 20:47:13,324 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-15 20:47:13,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-15 20:47:13,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-15 20:47:13,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-15 20:47:13,325 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-15 20:47:13,326 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-15 20:47:13,326 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-15 20:47:13,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-15 20:47:13,326 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-15 20:47:13,327 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-15 20:47:13,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-15 20:47:13,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-15 20:47:13,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-15 20:47:13,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-15 20:47:13,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-15 20:47:13,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-15 20:47:13,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-15 20:47:13,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-15 20:47:13,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-15 20:47:13,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_9ea65103-e0ed-4a67-bc54-1335b57276ba/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 -> dc1c46fafaf84313f7931d3a97aa18589b3f536c [2019-11-15 20:47:13,362 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-15 20:47:13,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-15 20:47:13,382 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-15 20:47:13,384 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-15 20:47:13,384 INFO L275 PluginConnector]: CDTParser initialized [2019-11-15 20:47:13,385 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-11-15 20:47:13,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/data/5e3880542/6bd75f554799459eb24c52f81286baa0/FLAGa299860f7 [2019-11-15 20:47:13,836 INFO L306 CDTParser]: Found 1 translation units. [2019-11-15 20:47:13,837 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-11-15 20:47:13,850 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/data/5e3880542/6bd75f554799459eb24c52f81286baa0/FLAGa299860f7 [2019-11-15 20:47:14,181 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/data/5e3880542/6bd75f554799459eb24c52f81286baa0 [2019-11-15 20:47:14,183 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-15 20:47:14,184 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-15 20:47:14,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-15 20:47:14,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-15 20:47:14,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-15 20:47:14,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f1d172e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14, skipping insertion in model container [2019-11-15 20:47:14,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,200 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-15 20:47:14,251 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-15 20:47:14,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:47:14,651 INFO L188 MainTranslator]: Completed pre-run [2019-11-15 20:47:14,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-15 20:47:14,732 INFO L192 MainTranslator]: Completed translation [2019-11-15 20:47:14,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14 WrapperNode [2019-11-15 20:47:14,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-15 20:47:14,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-15 20:47:14,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-15 20:47:14,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-15 20:47:14,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... [2019-11-15 20:47:14,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-15 20:47:14,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-15 20:47:14,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-15 20:47:14,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-15 20:47:14,785 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/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 [2019-11-15 20:47:14,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-15 20:47:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-15 20:47:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-15 20:47:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-15 20:47:14,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-15 20:47:14,875 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-15 20:47:14,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-15 20:47:14,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-15 20:47:14,876 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-15 20:47:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-15 20:47:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-15 20:47:14,877 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-15 20:47:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-15 20:47:14,878 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-15 20:47:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-15 20:47:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-15 20:47:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-15 20:47:14,879 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-15 20:47:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-15 20:47:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-15 20:47:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-15 20:47:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-15 20:47:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-15 20:47:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-15 20:47:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-15 20:47:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-15 20:47:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-15 20:47:14,883 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-15 20:47:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-15 20:47:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-15 20:47:14,884 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-15 20:47:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-15 20:47:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-15 20:47:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-15 20:47:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-15 20:47:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-15 20:47:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-15 20:47:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-15 20:47:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-15 20:47:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-15 20:47:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-15 20:47:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-15 20:47:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-15 20:47:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-15 20:47:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-15 20:47:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-15 20:47:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-15 20:47:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-15 20:47:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-15 20:47:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-15 20:47:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-15 20:47:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-15 20:47:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-15 20:47:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-15 20:47:14,888 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-15 20:47:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-15 20:47:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-15 20:47:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-15 20:47:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-15 20:47:14,889 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-15 20:47:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-15 20:47:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-15 20:47:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-15 20:47:14,890 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-15 20:47:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-15 20:47:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-15 20:47:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-15 20:47:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-15 20:47:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-15 20:47:14,891 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-15 20:47:14,892 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-15 20:47:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-15 20:47:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-15 20:47:14,893 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-15 20:47:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-15 20:47:14,894 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-15 20:47:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-15 20:47:14,895 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-15 20:47:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-15 20:47:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-15 20:47:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-15 20:47:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-15 20:47:14,896 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-15 20:47:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-15 20:47:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-15 20:47:14,897 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-15 20:47:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-15 20:47:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-15 20:47:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-15 20:47:14,898 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-15 20:47:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-15 20:47:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-15 20:47:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-15 20:47:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-15 20:47:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-15 20:47:14,899 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-15 20:47:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-15 20:47:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-15 20:47:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-15 20:47:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-15 20:47:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-15 20:47:14,900 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-15 20:47:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-15 20:47:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-15 20:47:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-15 20:47:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-15 20:47:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-15 20:47:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-15 20:47:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-15 20:47:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-15 20:47:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-15 20:47:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-15 20:47:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-15 20:47:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-15 20:47:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-15 20:47:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-15 20:47:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-15 20:47:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-15 20:47:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-15 20:47:14,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-15 20:47:15,416 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-15 20:47:15,416 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-15 20:47:15,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:47:15 BoogieIcfgContainer [2019-11-15 20:47:15,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-15 20:47:15,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-15 20:47:15,418 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-15 20:47:15,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-15 20:47:15,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.11 08:47:14" (1/3) ... [2019-11-15 20:47:15,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27543eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:47:15, skipping insertion in model container [2019-11-15 20:47:15,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.11 08:47:14" (2/3) ... [2019-11-15 20:47:15,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27543eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.11 08:47:15, skipping insertion in model container [2019-11-15 20:47:15,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:47:15" (3/3) ... [2019-11-15 20:47:15,425 INFO L109 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2019-11-15 20:47:15,437 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-15 20:47:15,449 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-15 20:47:15,460 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-15 20:47:15,487 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-15 20:47:15,487 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-15 20:47:15,487 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-15 20:47:15,488 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-15 20:47:15,488 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-15 20:47:15,489 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-15 20:47:15,489 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-15 20:47:15,489 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-15 20:47:15,508 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-15 20:47:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-15 20:47:15,530 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:15,531 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:15,534 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2019-11-15 20:47:15,547 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:15,547 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010058976] [2019-11-15 20:47:15,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:15,548 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:15,548 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:15,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:15,725 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010058976] [2019-11-15 20:47:15,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:15,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:47:15,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232499654] [2019-11-15 20:47:15,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:47:15,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:15,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:47:15,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:15,746 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-15 20:47:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:15,852 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-15 20:47:15,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:47:15,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-15 20:47:15,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:15,863 INFO L225 Difference]: With dead ends: 29 [2019-11-15 20:47:15,863 INFO L226 Difference]: Without dead ends: 26 [2019-11-15 20:47:15,865 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:47:15,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-15 20:47:15,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-15 20:47:15,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-15 20:47:15,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-15 20:47:15,904 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2019-11-15 20:47:15,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:15,905 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-15 20:47:15,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:47:15,905 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-15 20:47:15,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-15 20:47:15,905 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:15,906 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:15,907 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:15,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:15,907 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2019-11-15 20:47:15,907 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:15,908 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768436866] [2019-11-15 20:47:15,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:15,908 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:15,908 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:15,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:15,969 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768436866] [2019-11-15 20:47:15,969 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:15,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:47:15,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308572068] [2019-11-15 20:47:15,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:47:15,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:15,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:47:15,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:15,972 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2019-11-15 20:47:16,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:16,037 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-15 20:47:16,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:47:16,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-15 20:47:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:16,039 INFO L225 Difference]: With dead ends: 25 [2019-11-15 20:47:16,039 INFO L226 Difference]: Without dead ends: 25 [2019-11-15 20:47:16,040 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-15 20:47:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-15 20:47:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-15 20:47:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-15 20:47:16,044 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2019-11-15 20:47:16,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:16,044 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-15 20:47:16,044 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:47:16,044 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-15 20:47:16,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-15 20:47:16,045 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:16,045 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:16,045 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:16,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:16,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2019-11-15 20:47:16,046 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:16,046 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448304773] [2019-11-15 20:47:16,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,046 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,047 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:16,110 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448304773] [2019-11-15 20:47:16,110 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:16,110 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:47:16,110 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127013745] [2019-11-15 20:47:16,110 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:47:16,111 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:16,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:47:16,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,111 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2019-11-15 20:47:16,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:16,165 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-15 20:47:16,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:47:16,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-15 20:47:16,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:16,166 INFO L225 Difference]: With dead ends: 24 [2019-11-15 20:47:16,167 INFO L226 Difference]: Without dead ends: 24 [2019-11-15 20:47:16,167 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-15 20:47:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-15 20:47:16,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-15 20:47:16,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-15 20:47:16,170 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2019-11-15 20:47:16,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:16,171 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-15 20:47:16,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:47:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-15 20:47:16,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-15 20:47:16,171 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:16,171 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:16,172 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:16,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:16,172 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2019-11-15 20:47:16,172 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:16,173 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839811341] [2019-11-15 20:47:16,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:16,218 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839811341] [2019-11-15 20:47:16,218 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:16,219 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:47:16,219 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676526420] [2019-11-15 20:47:16,219 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:47:16,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:16,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:47:16,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,220 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2019-11-15 20:47:16,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:16,294 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-15 20:47:16,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:47:16,295 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-15 20:47:16,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:16,295 INFO L225 Difference]: With dead ends: 22 [2019-11-15 20:47:16,296 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 20:47:16,296 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 20:47:16,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-15 20:47:16,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 20:47:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-15 20:47:16,299 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2019-11-15 20:47:16,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:16,299 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-15 20:47:16,299 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:47:16,299 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-15 20:47:16,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-15 20:47:16,300 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:16,300 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:16,301 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:16,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:16,301 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2019-11-15 20:47:16,301 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:16,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422631458] [2019-11-15 20:47:16,301 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,302 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:16,363 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422631458] [2019-11-15 20:47:16,363 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:16,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-15 20:47:16,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120275031] [2019-11-15 20:47:16,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-15 20:47:16,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:16,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-15 20:47:16,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,370 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2019-11-15 20:47:16,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:16,418 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-15 20:47:16,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-15 20:47:16,419 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-11-15 20:47:16,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:16,419 INFO L225 Difference]: With dead ends: 20 [2019-11-15 20:47:16,419 INFO L226 Difference]: Without dead ends: 20 [2019-11-15 20:47:16,420 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-15 20:47:16,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-15 20:47:16,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-15 20:47:16,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-15 20:47:16,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-15 20:47:16,423 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2019-11-15 20:47:16,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:16,423 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-15 20:47:16,423 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-15 20:47:16,423 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-15 20:47:16,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-15 20:47:16,423 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:16,424 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:16,424 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:16,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:16,424 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2019-11-15 20:47:16,424 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:16,428 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405791950] [2019-11-15 20:47:16,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,428 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:16,540 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405791950] [2019-11-15 20:47:16,540 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:16,540 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-15 20:47:16,541 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723890267] [2019-11-15 20:47:16,541 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-15 20:47:16,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:16,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-15 20:47:16,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:47:16,542 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-11-15 20:47:16,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:16,585 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-15 20:47:16,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-15 20:47:16,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-15 20:47:16,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:16,586 INFO L225 Difference]: With dead ends: 22 [2019-11-15 20:47:16,587 INFO L226 Difference]: Without dead ends: 22 [2019-11-15 20:47:16,587 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-15 20:47:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-15 20:47:16,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-15 20:47:16,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-15 20:47:16,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-15 20:47:16,591 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-15 20:47:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:16,591 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-15 20:47:16,591 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-15 20:47:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-15 20:47:16,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-15 20:47:16,592 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:16,592 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:16,592 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:16,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:16,593 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2019-11-15 20:47:16,595 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:16,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103527501] [2019-11-15 20:47:16,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,595 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-15 20:47:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-15 20:47:16,718 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103527501] [2019-11-15 20:47:16,718 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-15 20:47:16,718 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-15 20:47:16,718 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350831887] [2019-11-15 20:47:16,719 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-15 20:47:16,719 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-15 20:47:16,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-15 20:47:16,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-11-15 20:47:16,720 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2019-11-15 20:47:16,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-15 20:47:16,885 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-11-15 20:47:16,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-15 20:47:16,886 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-11-15 20:47:16,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-15 20:47:16,887 INFO L225 Difference]: With dead ends: 21 [2019-11-15 20:47:16,887 INFO L226 Difference]: Without dead ends: 17 [2019-11-15 20:47:16,887 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-15 20:47:16,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-15 20:47:16,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-15 20:47:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-15 20:47:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2019-11-15 20:47:16,890 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2019-11-15 20:47:16,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-15 20:47:16,890 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2019-11-15 20:47:16,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-15 20:47:16,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2019-11-15 20:47:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-15 20:47:16,891 INFO L372 BasicCegarLoop]: Found error trace [2019-11-15 20:47:16,891 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-15 20:47:16,892 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-15 20:47:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-15 20:47:16,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2019-11-15 20:47:16,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-11-15 20:47:16,897 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54977191] [2019-11-15 20:47:16,897 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,898 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-11-15 20:47:16,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-15 20:47:16,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:47:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-15 20:47:16,976 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-15 20:47:16,976 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-11-15 20:47:17,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.11 08:47:17 BoogieIcfgContainer [2019-11-15 20:47:17,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-15 20:47:17,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-15 20:47:17,020 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-15 20:47:17,020 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-15 20:47:17,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.11 08:47:15" (3/4) ... [2019-11-15 20:47:17,023 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-15 20:47:17,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9ea65103-e0ed-4a67-bc54-1335b57276ba/bin/uautomizer/witness.graphml [2019-11-15 20:47:17,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-15 20:47:17,100 INFO L168 Benchmark]: Toolchain (without parser) took 2915.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.3 MB in the beginning and 945.2 MB in the end (delta: -5.9 MB). Peak memory consumption was 137.2 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:17,100 INFO L168 Benchmark]: CDTParser took 0.26 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. [2019-11-15 20:47:17,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:17,101 INFO L168 Benchmark]: Boogie Preprocessor took 49.64 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:17,102 INFO L168 Benchmark]: RCFGBuilder took 633.48 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:17,103 INFO L168 Benchmark]: TraceAbstraction took 1600.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 950.6 MB in the end (delta: 129.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:17,103 INFO L168 Benchmark]: Witness Printer took 78.71 ms. Allocated memory is still 1.2 GB. Free memory was 950.6 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-11-15 20:47:17,106 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 549.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 18.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.64 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 633.48 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: 43.9 MB). Peak memory consumption was 43.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1600.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 950.6 MB in the end (delta: 129.8 MB). Peak memory consumption was 129.8 MB. Max. memory is 11.5 GB. * Witness Printer took 78.71 ms. Allocated memory is still 1.2 GB. Free memory was 950.6 MB in the beginning and 945.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 524]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L515] struct T* x = ((void *)0); [L516] struct T* y = ((void *)0); [L517] y = malloc(sizeof(*y)) VAL [malloc(sizeof(*y))={2:0}, x={0:0}, y={2:0}] [L518] free(y) VAL [malloc(sizeof(*y))={2:0}, x={0:0}, y={2:0}] [L518] free(y) VAL [malloc(sizeof(*y))={2:0}, x={0:0}, y={2:0}] [L518] free(y) [L519] x = malloc(sizeof(*x)) VAL [malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L520] COND TRUE x == y VAL [malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L522] free(x) VAL [malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L522] free(x) VAL [malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L522] free(x) [L524] free(x) VAL [malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L524] free(x) VAL [malloc(sizeof(*x))={2:0}, malloc(sizeof(*y))={2:0}, x={2:0}, y={2:0}] [L524] free(x) VAL [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: 1.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 87 SDslu, 60 SDs, 0 SdLazy, 249 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s 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, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2706 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...