./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-properties/alternating_list-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c54128245d3ab9ad313da188c7be33f66027c6a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 17:40:14,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 17:40:14,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 17:40:14,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 17:40:14,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 17:40:14,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 17:40:14,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 17:40:14,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 17:40:14,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 17:40:14,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 17:40:14,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 17:40:14,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 17:40:14,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 17:40:14,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 17:40:14,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 17:40:14,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 17:40:14,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 17:40:14,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 17:40:14,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 17:40:14,293 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 17:40:14,294 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 17:40:14,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 17:40:14,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 17:40:14,296 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 17:40:14,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 17:40:14,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 17:40:14,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 17:40:14,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 17:40:14,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 17:40:14,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 17:40:14,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 17:40:14,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 17:40:14,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 17:40:14,300 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 17:40:14,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 17:40:14,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 17:40:14,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 17:40:14,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 17:40:14,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 17:40:14,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 17:40:14,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 17:40:14,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2019-12-07 17:40:14,313 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 17:40:14,313 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 17:40:14,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 17:40:14,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 17:40:14,314 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 17:40:14,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 17:40:14,314 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 17:40:14,314 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 17:40:14,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 17:40:14,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 17:40:14,315 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 17:40:14,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 17:40:14,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 17:40:14,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 17:40:14,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 17:40:14,317 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_eee591c7-6e8f-49be-a43c-f494b7e39163/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-memcleanup) ) 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 -> 9c54128245d3ab9ad313da188c7be33f66027c6a [2019-12-07 17:40:14,415 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 17:40:14,422 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 17:40:14,424 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 17:40:14,425 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 17:40:14,425 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 17:40:14,426 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/../../sv-benchmarks/c/list-properties/alternating_list-2.i [2019-12-07 17:40:14,463 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/data/46fd3daa7/2984f5542833458696e69050e21ad987/FLAGb12e41313 [2019-12-07 17:40:14,931 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 17:40:14,932 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/sv-benchmarks/c/list-properties/alternating_list-2.i [2019-12-07 17:40:14,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/data/46fd3daa7/2984f5542833458696e69050e21ad987/FLAGb12e41313 [2019-12-07 17:40:14,951 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/data/46fd3daa7/2984f5542833458696e69050e21ad987 [2019-12-07 17:40:14,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 17:40:14,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 17:40:14,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 17:40:14,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 17:40:14,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 17:40:14,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:40:14" (1/1) ... [2019-12-07 17:40:14,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@762a21c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:14, skipping insertion in model container [2019-12-07 17:40:14,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 05:40:14" (1/1) ... [2019-12-07 17:40:14,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 17:40:14,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 17:40:15,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:40:15,217 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 17:40:15,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 17:40:15,275 INFO L208 MainTranslator]: Completed translation [2019-12-07 17:40:15,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15 WrapperNode [2019-12-07 17:40:15,276 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 17:40:15,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 17:40:15,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 17:40:15,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 17:40:15,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,294 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,294 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... [2019-12-07 17:40:15,315 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 17:40:15,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 17:40:15,316 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 17:40:15,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 17:40:15,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/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 [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 17:40:15,355 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-12-07 17:40:15,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 17:40:15,356 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 17:40:15,357 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 17:40:15,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 17:40:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 17:40:15,360 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 17:40:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 17:40:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 17:40:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 17:40:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 17:40:15,526 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-12-07 17:40:15,650 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 17:40:15,650 INFO L287 CfgBuilder]: Removed 3 assume(true) statements. [2019-12-07 17:40:15,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:40:15 BoogieIcfgContainer [2019-12-07 17:40:15,651 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 17:40:15,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 17:40:15,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 17:40:15,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 17:40:15,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 05:40:14" (1/3) ... [2019-12-07 17:40:15,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7f5ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:40:15, skipping insertion in model container [2019-12-07 17:40:15,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 05:40:15" (2/3) ... [2019-12-07 17:40:15,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c7f5ce6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 05:40:15, skipping insertion in model container [2019-12-07 17:40:15,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:40:15" (3/3) ... [2019-12-07 17:40:15,656 INFO L109 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2019-12-07 17:40:15,662 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 17:40:15,667 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2019-12-07 17:40:15,674 INFO L249 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2019-12-07 17:40:15,687 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 17:40:15,687 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 17:40:15,687 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 17:40:15,687 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 17:40:15,687 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 17:40:15,687 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 17:40:15,687 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 17:40:15,687 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 17:40:15,699 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2019-12-07 17:40:15,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 17:40:15,705 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:15,705 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:15,705 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:15,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:15,709 INFO L82 PathProgramCache]: Analyzing trace with hash 783594837, now seen corresponding path program 1 times [2019-12-07 17:40:15,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:15,715 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768217514] [2019-12-07 17:40:15,715 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:15,822 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768217514] [2019-12-07 17:40:15,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:15,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 17:40:15,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740449508] [2019-12-07 17:40:15,826 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 17:40:15,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:15,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 17:40:15,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:40:15,837 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2019-12-07 17:40:15,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:15,949 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2019-12-07 17:40:15,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 17:40:15,950 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-12-07 17:40:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:15,956 INFO L225 Difference]: With dead ends: 81 [2019-12-07 17:40:15,956 INFO L226 Difference]: Without dead ends: 74 [2019-12-07 17:40:15,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 17:40:15,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-12-07 17:40:15,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-12-07 17:40:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-12-07 17:40:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2019-12-07 17:40:15,984 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 10 [2019-12-07 17:40:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:15,984 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2019-12-07 17:40:15,984 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 17:40:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2019-12-07 17:40:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:40:15,985 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:15,985 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:15,985 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:15,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1478399476, now seen corresponding path program 1 times [2019-12-07 17:40:15,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:15,986 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523561040] [2019-12-07 17:40:15,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:15,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:16,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523561040] [2019-12-07 17:40:16,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:16,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:40:16,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046061914] [2019-12-07 17:40:16,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:40:16,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:16,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:40:16,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:40:16,036 INFO L87 Difference]: Start difference. First operand 74 states and 79 transitions. Second operand 5 states. [2019-12-07 17:40:16,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:16,178 INFO L93 Difference]: Finished difference Result 95 states and 103 transitions. [2019-12-07 17:40:16,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:40:16,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 17:40:16,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:16,180 INFO L225 Difference]: With dead ends: 95 [2019-12-07 17:40:16,180 INFO L226 Difference]: Without dead ends: 95 [2019-12-07 17:40:16,180 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:16,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-12-07 17:40:16,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 75. [2019-12-07 17:40:16,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2019-12-07 17:40:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2019-12-07 17:40:16,187 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 11 [2019-12-07 17:40:16,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:16,187 INFO L462 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2019-12-07 17:40:16,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:40:16,188 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2019-12-07 17:40:16,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 17:40:16,188 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:16,188 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:16,188 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:16,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:16,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1478399475, now seen corresponding path program 1 times [2019-12-07 17:40:16,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:16,189 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546000163] [2019-12-07 17:40:16,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:16,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:16,238 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546000163] [2019-12-07 17:40:16,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:16,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:40:16,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140439421] [2019-12-07 17:40:16,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:40:16,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:16,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:40:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:40:16,239 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 5 states. [2019-12-07 17:40:16,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:16,383 INFO L93 Difference]: Finished difference Result 103 states and 113 transitions. [2019-12-07 17:40:16,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:40:16,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 17:40:16,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:16,384 INFO L225 Difference]: With dead ends: 103 [2019-12-07 17:40:16,384 INFO L226 Difference]: Without dead ends: 103 [2019-12-07 17:40:16,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:16,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-12-07 17:40:16,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 91. [2019-12-07 17:40:16,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-12-07 17:40:16,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2019-12-07 17:40:16,391 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 11 [2019-12-07 17:40:16,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:16,392 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2019-12-07 17:40:16,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:40:16,392 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2019-12-07 17:40:16,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 17:40:16,392 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:16,392 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:16,393 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:16,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:16,393 INFO L82 PathProgramCache]: Analyzing trace with hash -203522987, now seen corresponding path program 1 times [2019-12-07 17:40:16,393 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:16,393 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996401201] [2019-12-07 17:40:16,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:16,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996401201] [2019-12-07 17:40:16,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:16,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 17:40:16,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957585061] [2019-12-07 17:40:16,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:40:16,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:16,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:40:16,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:40:16,459 INFO L87 Difference]: Start difference. First operand 91 states and 103 transitions. Second operand 7 states. [2019-12-07 17:40:16,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:16,634 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2019-12-07 17:40:16,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:40:16,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2019-12-07 17:40:16,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:16,635 INFO L225 Difference]: With dead ends: 136 [2019-12-07 17:40:16,636 INFO L226 Difference]: Without dead ends: 136 [2019-12-07 17:40:16,636 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:40:16,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-12-07 17:40:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 94. [2019-12-07 17:40:16,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2019-12-07 17:40:16,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2019-12-07 17:40:16,642 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 18 [2019-12-07 17:40:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:16,642 INFO L462 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2019-12-07 17:40:16,642 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:40:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2019-12-07 17:40:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 17:40:16,643 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:16,643 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:16,643 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:16,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:16,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2045615242, now seen corresponding path program 1 times [2019-12-07 17:40:16,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:16,644 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207643323] [2019-12-07 17:40:16,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:16,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:16,688 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207643323] [2019-12-07 17:40:16,688 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:16,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 17:40:16,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649990363] [2019-12-07 17:40:16,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 17:40:16,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:16,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 17:40:16,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 17:40:16,690 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 5 states. [2019-12-07 17:40:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:16,802 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2019-12-07 17:40:16,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 17:40:16,803 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-12-07 17:40:16,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:16,803 INFO L225 Difference]: With dead ends: 101 [2019-12-07 17:40:16,804 INFO L226 Difference]: Without dead ends: 101 [2019-12-07 17:40:16,804 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-12-07 17:40:16,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 95. [2019-12-07 17:40:16,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-12-07 17:40:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2019-12-07 17:40:16,809 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 19 [2019-12-07 17:40:16,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:16,809 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2019-12-07 17:40:16,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 17:40:16,809 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2019-12-07 17:40:16,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-12-07 17:40:16,810 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:16,810 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:16,810 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1010482820, now seen corresponding path program 1 times [2019-12-07 17:40:16,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:16,811 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155858401] [2019-12-07 17:40:16,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:16,848 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155858401] [2019-12-07 17:40:16,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:16,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:40:16,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234444260] [2019-12-07 17:40:16,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:40:16,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:16,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:40:16,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:16,849 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 6 states. [2019-12-07 17:40:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:16,955 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2019-12-07 17:40:16,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-12-07 17:40:16,955 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-12-07 17:40:16,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:16,956 INFO L225 Difference]: With dead ends: 105 [2019-12-07 17:40:16,956 INFO L226 Difference]: Without dead ends: 105 [2019-12-07 17:40:16,956 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-12-07 17:40:16,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-12-07 17:40:16,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 97. [2019-12-07 17:40:16,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-12-07 17:40:16,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 109 transitions. [2019-12-07 17:40:16,962 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 109 transitions. Word has length 20 [2019-12-07 17:40:16,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:16,963 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 109 transitions. [2019-12-07 17:40:16,963 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:40:16,963 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 109 transitions. [2019-12-07 17:40:16,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 17:40:16,964 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:16,964 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:16,964 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:16,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:16,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1258779451, now seen corresponding path program 1 times [2019-12-07 17:40:16,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:16,964 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121519294] [2019-12-07 17:40:16,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:17,024 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121519294] [2019-12-07 17:40:17,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:17,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 17:40:17,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842789557] [2019-12-07 17:40:17,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 17:40:17,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:17,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 17:40:17,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-12-07 17:40:17,025 INFO L87 Difference]: Start difference. First operand 97 states and 109 transitions. Second operand 6 states. [2019-12-07 17:40:17,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:17,118 INFO L93 Difference]: Finished difference Result 111 states and 123 transitions. [2019-12-07 17:40:17,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 17:40:17,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-12-07 17:40:17,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:17,120 INFO L225 Difference]: With dead ends: 111 [2019-12-07 17:40:17,120 INFO L226 Difference]: Without dead ends: 107 [2019-12-07 17:40:17,120 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:40:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-12-07 17:40:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 100. [2019-12-07 17:40:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-12-07 17:40:17,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 112 transitions. [2019-12-07 17:40:17,126 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 112 transitions. Word has length 21 [2019-12-07 17:40:17,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:17,126 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 112 transitions. [2019-12-07 17:40:17,126 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 17:40:17,127 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 112 transitions. [2019-12-07 17:40:17,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 17:40:17,127 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:17,127 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:17,128 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:17,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1260196507, now seen corresponding path program 1 times [2019-12-07 17:40:17,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:17,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049501295] [2019-12-07 17:40:17,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:17,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049501295] [2019-12-07 17:40:17,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:17,176 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-12-07 17:40:17,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626759356] [2019-12-07 17:40:17,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 17:40:17,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:17,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 17:40:17,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 17:40:17,177 INFO L87 Difference]: Start difference. First operand 100 states and 112 transitions. Second operand 8 states. [2019-12-07 17:40:17,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:17,350 INFO L93 Difference]: Finished difference Result 115 states and 123 transitions. [2019-12-07 17:40:17,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:40:17,350 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2019-12-07 17:40:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:17,351 INFO L225 Difference]: With dead ends: 115 [2019-12-07 17:40:17,351 INFO L226 Difference]: Without dead ends: 108 [2019-12-07 17:40:17,351 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:40:17,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2019-12-07 17:40:17,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2019-12-07 17:40:17,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2019-12-07 17:40:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2019-12-07 17:40:17,354 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 21 [2019-12-07 17:40:17,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:17,355 INFO L462 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2019-12-07 17:40:17,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 17:40:17,355 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2019-12-07 17:40:17,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 17:40:17,355 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:17,355 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:17,355 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:17,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:17,356 INFO L82 PathProgramCache]: Analyzing trace with hash -404712455, now seen corresponding path program 1 times [2019-12-07 17:40:17,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:17,356 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143368800] [2019-12-07 17:40:17,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:17,393 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143368800] [2019-12-07 17:40:17,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:17,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 17:40:17,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294510032] [2019-12-07 17:40:17,393 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:40:17,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:17,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:40:17,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:40:17,394 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 7 states. [2019-12-07 17:40:17,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:17,537 INFO L93 Difference]: Finished difference Result 98 states and 109 transitions. [2019-12-07 17:40:17,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 17:40:17,537 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-12-07 17:40:17,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:17,538 INFO L225 Difference]: With dead ends: 98 [2019-12-07 17:40:17,538 INFO L226 Difference]: Without dead ends: 98 [2019-12-07 17:40:17,538 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-12-07 17:40:17,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2019-12-07 17:40:17,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2019-12-07 17:40:17,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-12-07 17:40:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2019-12-07 17:40:17,541 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 21 [2019-12-07 17:40:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:17,541 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2019-12-07 17:40:17,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:40:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2019-12-07 17:40:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-12-07 17:40:17,542 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:17,542 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:17,542 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:17,542 INFO L82 PathProgramCache]: Analyzing trace with hash -404712454, now seen corresponding path program 1 times [2019-12-07 17:40:17,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:17,543 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575927693] [2019-12-07 17:40:17,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:17,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 17:40:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 17:40:17,599 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575927693] [2019-12-07 17:40:17,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 17:40:17,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-12-07 17:40:17,599 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598066275] [2019-12-07 17:40:17,599 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 17:40:17,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 17:40:17,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 17:40:17,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-12-07 17:40:17,600 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand 7 states. [2019-12-07 17:40:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 17:40:17,778 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2019-12-07 17:40:17,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 17:40:17,778 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2019-12-07 17:40:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 17:40:17,779 INFO L225 Difference]: With dead ends: 89 [2019-12-07 17:40:17,779 INFO L226 Difference]: Without dead ends: 89 [2019-12-07 17:40:17,779 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-12-07 17:40:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-12-07 17:40:17,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2019-12-07 17:40:17,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-12-07 17:40:17,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 89 transitions. [2019-12-07 17:40:17,781 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 89 transitions. Word has length 21 [2019-12-07 17:40:17,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 17:40:17,781 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 89 transitions. [2019-12-07 17:40:17,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 17:40:17,782 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 89 transitions. [2019-12-07 17:40:17,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 17:40:17,782 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 17:40:17,782 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 17:40:17,782 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr29ENSURES_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr28ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2019-12-07 17:40:17,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 17:40:17,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1029325368, now seen corresponding path program 1 times [2019-12-07 17:40:17,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 17:40:17,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449635240] [2019-12-07 17:40:17,783 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 17:40:17,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:40:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 17:40:17,819 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 17:40:17,819 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 17:40:17,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 05:40:17 BoogieIcfgContainer [2019-12-07 17:40:17,840 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 17:40:17,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 17:40:17,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 17:40:17,841 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 17:40:17,841 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 05:40:15" (3/4) ... [2019-12-07 17:40:17,843 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 17:40:17,878 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_eee591c7-6e8f-49be-a43c-f494b7e39163/bin/uautomizer/witness.graphml [2019-12-07 17:40:17,878 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 17:40:17,880 INFO L168 Benchmark]: Toolchain (without parser) took 2924.49 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 935.5 MB in the beginning and 845.1 MB in the end (delta: 90.4 MB). Peak memory consumption was 191.5 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:17,880 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 17:40:17,880 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -144.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:17,881 INFO L168 Benchmark]: Boogie Preprocessor took 39.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:17,881 INFO L168 Benchmark]: RCFGBuilder took 335.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:17,881 INFO L168 Benchmark]: TraceAbstraction took 2188.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 846.8 MB in the end (delta: 172.4 MB). Peak memory consumption was 172.4 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:17,881 INFO L168 Benchmark]: Witness Printer took 37.80 ms. Allocated memory is still 1.1 GB. Free memory was 846.8 MB in the beginning and 845.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 17:40:17,883 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 319.91 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 101.2 MB). Free memory was 935.5 MB in the beginning and 1.1 GB in the end (delta: -144.4 MB). Peak memory consumption was 18.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.34 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 335.71 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.2 MB). Peak memory consumption was 55.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2188.48 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 846.8 MB in the end (delta: 172.4 MB). Peak memory consumption was 172.4 MB. Max. memory is 11.5 GB. * Witness Printer took 37.80 ms. Allocated memory is still 1.1 GB. Free memory was 846.8 MB in the beginning and 845.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 562]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L523] COND FALSE !(a == 0) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}] [L524] List t; [L525] List p = a; VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L528] p->h = 2 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L529] flag = 0 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L534] t = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L535] COND FALSE !(t == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L536] p->n = t VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L537] EXPR p->n VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->n={-2:0}, t={-2:0}] [L537] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L539] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-2:0}, t={-2:0}] [L540] p = a [L541] flag = 1 VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L542] EXPR p->h VAL [a={-1:0}, flag=1, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=2, t={-2:0}] [L542] COND TRUE p->h != 3 [L543] COND TRUE \read(flag) [L544] flag = 0 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] [L545] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=2, t={-2:0}] [L545] COND TRUE p->h != 1 [L562] __VERIFIER_error() VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-2:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 97 locations, 30 error locations. Result: UNSAFE, OverallTime: 2.1s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 515 SDtfs, 845 SDslu, 900 SDs, 0 SdLazy, 1633 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=7, 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, 10 MinimizatonAttempts, 122 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 163 ConstructedInterpolants, 0 QuantifiedInterpolants, 10974 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 4/4 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...