./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/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i -s /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/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 [2019-10-22 08:54:11,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:11,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:11,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:11,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:11,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:11,199 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:11,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:11,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:11,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:11,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:11,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:11,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:11,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:11,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:11,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:11,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:11,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:11,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:11,210 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:11,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:11,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:11,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:11,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:11,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:11,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:11,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:11,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:11,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:11,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:11,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:11,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:11,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:11,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:11,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:11,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:11,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:11,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:11,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:11,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:11,230 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:11,231 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-10-22 08:54:11,242 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:11,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:11,243 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:11,243 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:11,243 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:11,244 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:11,244 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:54:11,244 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:11,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:11,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:54:11,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:11,245 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-10-22 08:54:11,245 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-10-22 08:54:11,245 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-10-22 08:54:11,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 08:54:11,245 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:54:11,245 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:11,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:11,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:11,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 08:54:11,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 08:54:11,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 08:54:11,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:11,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 08:54:11,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:11,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 08:54:11,247 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/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/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 [2019-10-22 08:54:11,270 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:11,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:11,282 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:11,284 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:11,284 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:11,285 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/../../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-10-22 08:54:11,329 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/data/33ea430b3/2d20fad604f94a76a1b2ec6d6121de00/FLAGa2648d005 [2019-10-22 08:54:11,768 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:11,769 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-10-22 08:54:11,779 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/data/33ea430b3/2d20fad604f94a76a1b2ec6d6121de00/FLAGa2648d005 [2019-10-22 08:54:11,792 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/data/33ea430b3/2d20fad604f94a76a1b2ec6d6121de00 [2019-10-22 08:54:11,794 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:11,796 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-10-22 08:54:11,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:11,797 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:11,800 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:11,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f3f4fb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:11, skipping insertion in model container [2019-10-22 08:54:11,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:11" (1/1) ... [2019-10-22 08:54:11,810 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:11,839 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:12,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:12,142 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:12,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:12,211 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:12,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12 WrapperNode [2019-10-22 08:54:12,211 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:12,212 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:12,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:12,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:12,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... [2019-10-22 08:54:12,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:12,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:12,254 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:12,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:12,255 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/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 [2019-10-22 08:54:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-22 08:54:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:12,302 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-22 08:54:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-22 08:54:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-10-22 08:54:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-10-22 08:54:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-10-22 08:54:12,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-22 08:54:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-22 08:54:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-22 08:54:12,303 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-22 08:54:12,304 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-22 08:54:12,305 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-10-22 08:54:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-10-22 08:54:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-10-22 08:54:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-22 08:54:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-22 08:54:12,306 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-22 08:54:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-22 08:54:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-22 08:54:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-22 08:54:12,308 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-22 08:54:12,309 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-22 08:54:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-22 08:54:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-22 08:54:12,310 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-22 08:54:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-22 08:54:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-22 08:54:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-22 08:54:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-22 08:54:12,311 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-22 08:54:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-22 08:54:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-22 08:54:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-22 08:54:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-22 08:54:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-22 08:54:12,312 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-22 08:54:12,313 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-22 08:54:12,314 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-22 08:54:12,315 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-22 08:54:12,316 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-22 08:54:12,317 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-22 08:54:12,318 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-22 08:54:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-22 08:54:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-22 08:54:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-22 08:54:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-22 08:54:12,321 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-22 08:54:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-22 08:54:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-22 08:54:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-22 08:54:12,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-22 08:54:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-22 08:54:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-22 08:54:12,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:12,822 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:12,823 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-22 08:54:12,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12 BoogieIcfgContainer [2019-10-22 08:54:12,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:12,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 08:54:12,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 08:54:12,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 08:54:12,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 08:54:11" (1/3) ... [2019-10-22 08:54:12,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c708aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:12, skipping insertion in model container [2019-10-22 08:54:12,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:12" (2/3) ... [2019-10-22 08:54:12,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c708aad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 08:54:12, skipping insertion in model container [2019-10-22 08:54:12,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/3) ... [2019-10-22 08:54:12,834 INFO L109 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2019-10-22 08:54:12,843 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 08:54:12,852 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-10-22 08:54:12,863 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-10-22 08:54:12,882 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 08:54:12,883 INFO L374 AbstractCegarLoop]: Hoare is false [2019-10-22 08:54:12,883 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 08:54:12,884 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:12,884 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:12,884 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 08:54:12,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:12,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 08:54:12,901 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-10-22 08:54:12,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 08:54:12,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:12,913 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:12,916 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:12,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:12,922 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2019-10-22 08:54:12,930 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:12,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935789100] [2019-10-22 08:54:12,931 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,931 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:12,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,103 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935789100] [2019-10-22 08:54:13,104 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,104 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:13,104 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329068536] [2019-10-22 08:54:13,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,109 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,120 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-10-22 08:54:13,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,197 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-10-22 08:54:13,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:13,199 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-10-22 08:54:13,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,207 INFO L225 Difference]: With dead ends: 29 [2019-10-22 08:54:13,207 INFO L226 Difference]: Without dead ends: 26 [2019-10-22 08:54:13,209 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 [2019-10-22 08:54:13,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-10-22 08:54:13,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-10-22 08:54:13,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-10-22 08:54:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-10-22 08:54:13,241 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2019-10-22 08:54:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,242 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-10-22 08:54:13,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,242 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-10-22 08:54:13,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-10-22 08:54:13,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,243 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,243 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:13,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,244 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2019-10-22 08:54:13,244 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696083801] [2019-10-22 08:54:13,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,291 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696083801] [2019-10-22 08:54:13,292 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,292 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:13,292 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007707955] [2019-10-22 08:54:13,293 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,293 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,294 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2019-10-22 08:54:13,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,354 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-10-22 08:54:13,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:13,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-10-22 08:54:13,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,355 INFO L225 Difference]: With dead ends: 25 [2019-10-22 08:54:13,355 INFO L226 Difference]: Without dead ends: 25 [2019-10-22 08:54:13,356 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 [2019-10-22 08:54:13,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-10-22 08:54:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-10-22 08:54:13,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-22 08:54:13,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-10-22 08:54:13,371 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2019-10-22 08:54:13,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,372 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-10-22 08:54:13,372 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,372 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-10-22 08:54:13,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-22 08:54:13,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,372 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,373 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:13,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2019-10-22 08:54:13,373 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,373 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819810046] [2019-10-22 08:54:13,373 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,374 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,374 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,494 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819810046] [2019-10-22 08:54:13,495 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:13,495 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409981556] [2019-10-22 08:54:13,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,496 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2019-10-22 08:54:13,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,570 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-10-22 08:54:13,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:13,571 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-10-22 08:54:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,572 INFO L225 Difference]: With dead ends: 24 [2019-10-22 08:54:13,572 INFO L226 Difference]: Without dead ends: 24 [2019-10-22 08:54:13,572 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 [2019-10-22 08:54:13,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-10-22 08:54:13,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-10-22 08:54:13,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-10-22 08:54:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-10-22 08:54:13,577 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2019-10-22 08:54:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,577 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-10-22 08:54:13,577 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,577 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-10-22 08:54:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-22 08:54:13,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,578 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,578 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2019-10-22 08:54:13,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,583 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796648476] [2019-10-22 08:54:13,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,583 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,583 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796648476] [2019-10-22 08:54:13,676 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:13,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002827554] [2019-10-22 08:54:13,676 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,676 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,677 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2019-10-22 08:54:13,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,722 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-10-22 08:54:13,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:13,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-10-22 08:54:13,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,724 INFO L225 Difference]: With dead ends: 22 [2019-10-22 08:54:13,724 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 08:54:13,725 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 [2019-10-22 08:54:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 08:54:13,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-22 08:54:13,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:54:13,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-10-22 08:54:13,729 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2019-10-22 08:54:13,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,729 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-10-22 08:54:13,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,729 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-10-22 08:54:13,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-22 08:54:13,730 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,730 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,730 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:13,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,736 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2019-10-22 08:54:13,737 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506859537] [2019-10-22 08:54:13,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,737 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,807 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506859537] [2019-10-22 08:54:13,807 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 08:54:13,807 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913566935] [2019-10-22 08:54:13,808 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 08:54:13,808 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:13,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:13,808 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2019-10-22 08:54:13,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:13,850 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-10-22 08:54:13,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:13,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2019-10-22 08:54:13,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:13,852 INFO L225 Difference]: With dead ends: 20 [2019-10-22 08:54:13,852 INFO L226 Difference]: Without dead ends: 20 [2019-10-22 08:54:13,852 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 [2019-10-22 08:54:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-10-22 08:54:13,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-10-22 08:54:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-22 08:54:13,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-10-22 08:54:13,854 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2019-10-22 08:54:13,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:13,855 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-10-22 08:54:13,855 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 08:54:13,855 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-10-22 08:54:13,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-22 08:54:13,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:13,855 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:13,856 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:13,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:13,856 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2019-10-22 08:54:13,856 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:13,856 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499176633] [2019-10-22 08:54:13,857 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,857 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:13,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:13,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:13,954 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499176633] [2019-10-22 08:54:13,959 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:13,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:54:13,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533300120] [2019-10-22 08:54:13,960 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 08:54:13,960 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:13,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:54:13,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:54:13,961 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2019-10-22 08:54:14,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:14,002 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-10-22 08:54:14,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 08:54:14,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-10-22 08:54:14,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:14,003 INFO L225 Difference]: With dead ends: 22 [2019-10-22 08:54:14,004 INFO L226 Difference]: Without dead ends: 22 [2019-10-22 08:54:14,004 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 [2019-10-22 08:54:14,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-22 08:54:14,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-22 08:54:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-22 08:54:14,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-10-22 08:54:14,007 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-10-22 08:54:14,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:14,007 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-10-22 08:54:14,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 08:54:14,008 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-10-22 08:54:14,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 08:54:14,008 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:14,008 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:14,008 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:14,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,009 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2019-10-22 08:54:14,009 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,009 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308359435] [2019-10-22 08:54:14,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,009 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:14,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308359435] [2019-10-22 08:54:14,115 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:14,116 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 08:54:14,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121527315] [2019-10-22 08:54:14,116 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-22 08:54:14,116 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:14,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-22 08:54:14,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-22 08:54:14,117 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2019-10-22 08:54:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:14,238 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-10-22 08:54:14,238 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 08:54:14,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2019-10-22 08:54:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 08:54:14,239 INFO L225 Difference]: With dead ends: 21 [2019-10-22 08:54:14,239 INFO L226 Difference]: Without dead ends: 17 [2019-10-22 08:54:14,239 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 [2019-10-22 08:54:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-10-22 08:54:14,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-10-22 08:54:14,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 08:54:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2019-10-22 08:54:14,242 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2019-10-22 08:54:14,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 08:54:14,242 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2019-10-22 08:54:14,242 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-22 08:54:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2019-10-22 08:54:14,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 08:54:14,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 08:54:14,243 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:54:14,243 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr1ASSERT_VIOLATIONMEMORY_FREE]=== [2019-10-22 08:54:14,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:14,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2019-10-22 08:54:14,244 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:14,244 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637457111] [2019-10-22 08:54:14,244 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:14,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:14,292 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:14,292 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 08:54:14,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 08:54:14 BoogieIcfgContainer [2019-10-22 08:54:14,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 08:54:14,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:14,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:14,316 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:14,316 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:12" (3/4) ... [2019-10-22 08:54:14,318 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 08:54:14,360 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8142e96b-9ded-4247-902d-78a6eef8b04a/bin/uautomizer/witness.graphml [2019-10-22 08:54:14,360 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:14,362 INFO L168 Benchmark]: Toolchain (without parser) took 2565.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.9 MB in the beginning and 946.5 MB in the end (delta: -4.5 MB). Peak memory consumption was 134.9 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:14,362 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:14,363 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:14,363 INFO L168 Benchmark]: Boogie Preprocessor took 41.36 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:14,364 INFO L168 Benchmark]: RCFGBuilder took 570.15 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:14,364 INFO L168 Benchmark]: TraceAbstraction took 1490.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 949.1 MB in the end (delta: 130.1 MB). Peak memory consumption was 130.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:14,365 INFO L168 Benchmark]: Witness Printer took 44.40 ms. Allocated memory is still 1.2 GB. Free memory was 949.1 MB in the beginning and 946.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:14,367 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 415.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -184.0 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 41.36 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: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 570.15 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: 44.0 MB). Peak memory consumption was 44.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1490.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 949.1 MB in the end (delta: 130.1 MB). Peak memory consumption was 130.1 MB. Max. memory is 11.5 GB. * Witness Printer took 44.40 ms. Allocated memory is still 1.2 GB. Free memory was 949.1 MB in the beginning and 946.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 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: 1.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 87 SDslu, 60 SDs, 0 SdLazy, 249 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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...