./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) 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_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b2f3c0ded3a6ea37e981661d4b4066d384875e4d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:26:25,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:26:25,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:26:25,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:26:25,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:26:25,160 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:26:25,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:26:25,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:26:25,163 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:26:25,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:26:25,164 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:26:25,165 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:26:25,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:26:25,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:26:25,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:26:25,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:26:25,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:26:25,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:26:25,170 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:26:25,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:26:25,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:26:25,173 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:26:25,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:26:25,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:26:25,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:26:25,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:26:25,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:26:25,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:26:25,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:26:25,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:26:25,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:26:25,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:26:25,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:26:25,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:26:25,179 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:26:25,180 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:26:25,180 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:26:25,180 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:26:25,180 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:26:25,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:26:25,181 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:26:25,182 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 18:26:25,191 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:26:25,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:26:25,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:26:25,192 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:26:25,192 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:26:25,192 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:26:25,193 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:26:25,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:26:25,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:26:25,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:26:25,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:26:25,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:26:25,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:26:25,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:26:25,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:26:25,195 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_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2019-12-07 18:26:25,293 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:26:25,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:26:25,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:26:25,304 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:26:25,304 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:26:25,304 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-12-07 18:26:25,342 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/data/914507b03/dec406bbd0e6489ba2f9d97ad580fde7/FLAG1c5545492 [2019-12-07 18:26:25,807 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:26:25,808 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2019-12-07 18:26:25,818 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/data/914507b03/dec406bbd0e6489ba2f9d97ad580fde7/FLAG1c5545492 [2019-12-07 18:26:25,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/data/914507b03/dec406bbd0e6489ba2f9d97ad580fde7 [2019-12-07 18:26:25,829 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:26:25,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:26:25,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:26:25,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:26:25,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:26:25,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:26:25" (1/1) ... [2019-12-07 18:26:25,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7aaada41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:25, skipping insertion in model container [2019-12-07 18:26:25,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:26:25" (1/1) ... [2019-12-07 18:26:25,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:26:25,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:26:26,056 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:26:26,062 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:26:26,090 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:26:26,120 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:26:26,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26 WrapperNode [2019-12-07 18:26:26,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:26:26,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:26:26,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:26:26,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:26:26,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... [2019-12-07 18:26:26,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:26:26,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:26:26,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:26:26,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:26:26,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/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 18:26:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:26:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:26:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 18:26:26,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 18:26:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 18:26:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 18:26:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 18:26:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2019-12-07 18:26:26,196 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:26:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 18:26:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 18:26:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 18:26:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 18:26:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 18:26:26,196 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 18:26:26,197 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 18:26:26,198 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 18:26:26,199 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 18:26:26,200 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 18:26:26,201 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 18:26:26,202 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 18:26:26,203 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 18:26:26,204 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 18:26:26,205 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 18:26:26,206 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:26:26,207 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:26:26,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:26:26,457 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:26:26,457 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 18:26:26,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:26:26 BoogieIcfgContainer [2019-12-07 18:26:26,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:26:26,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:26:26,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:26:26,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:26:26,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:26:25" (1/3) ... [2019-12-07 18:26:26,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc67992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:26:26, skipping insertion in model container [2019-12-07 18:26:26,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:26:26" (2/3) ... [2019-12-07 18:26:26,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bc67992 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:26:26, skipping insertion in model container [2019-12-07 18:26:26,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:26:26" (3/3) ... [2019-12-07 18:26:26,463 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2019-12-07 18:26:26,469 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:26:26,473 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-12-07 18:26:26,480 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-12-07 18:26:26,492 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:26:26,492 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:26:26,492 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:26:26,492 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:26:26,492 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:26:26,492 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:26:26,492 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:26:26,492 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:26:26,501 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-12-07 18:26:26,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:26:26,507 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:26,508 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:26:26,508 INFO L410 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2019-12-07 18:26:26,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:26,517 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787465332] [2019-12-07 18:26:26,517 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:26,645 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 18:26:26,645 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787465332] [2019-12-07 18:26:26,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:26:26,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:26:26,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132538194] [2019-12-07 18:26:26,649 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:26:26,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:26:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:26:26,660 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2019-12-07 18:26:26,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:26,745 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-12-07 18:26:26,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:26:26,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:26:26,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:26,754 INFO L225 Difference]: With dead ends: 33 [2019-12-07 18:26:26,755 INFO L226 Difference]: Without dead ends: 30 [2019-12-07 18:26:26,756 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:26:26,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-12-07 18:26:26,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-12-07 18:26:26,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:26:26,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 18:26:26,781 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2019-12-07 18:26:26,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:26,781 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 18:26:26,781 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:26:26,781 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 18:26:26,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:26:26,782 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:26,782 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:26:26,782 INFO L410 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:26,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:26,782 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2019-12-07 18:26:26,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:26,782 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138858737] [2019-12-07 18:26:26,782 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:26,859 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 18:26:26,859 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138858737] [2019-12-07 18:26:26,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:26:26,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:26:26,860 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434327960] [2019-12-07 18:26:26,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-12-07 18:26:26,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:26,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 18:26:26,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:26:26,862 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 6 states. [2019-12-07 18:26:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:26,947 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2019-12-07 18:26:26,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:26:26,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2019-12-07 18:26:26,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:26,948 INFO L225 Difference]: With dead ends: 34 [2019-12-07 18:26:26,948 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 18:26:26,949 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:26:26,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 18:26:26,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2019-12-07 18:26:26,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 18:26:26,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2019-12-07 18:26:26,952 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2019-12-07 18:26:26,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:26,953 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2019-12-07 18:26:26,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-12-07 18:26:26,953 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2019-12-07 18:26:26,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 18:26:26,953 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:26,953 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:26:26,953 INFO L410 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:26,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:26,954 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2019-12-07 18:26:26,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:26,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120423694] [2019-12-07 18:26:26,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:27,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:27,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120423694] [2019-12-07 18:26:27,026 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911843664] [2019-12-07 18:26:27,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:27,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:27,102 INFO L264 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:26:27,106 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:26:27,143 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:26:27,144 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:27,149 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:27,150 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:27,150 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 18:26:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:27,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:26:27,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-12-07 18:26:27,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916885560] [2019-12-07 18:26:27,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:26:27,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:27,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:26:27,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:26:27,163 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2019-12-07 18:26:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:27,239 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2019-12-07 18:26:27,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:26:27,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-12-07 18:26:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:27,240 INFO L225 Difference]: With dead ends: 33 [2019-12-07 18:26:27,240 INFO L226 Difference]: Without dead ends: 33 [2019-12-07 18:26:27,240 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:26:27,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-12-07 18:26:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2019-12-07 18:26:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-12-07 18:26:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-12-07 18:26:27,243 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2019-12-07 18:26:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:27,244 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-12-07 18:26:27,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:26:27,244 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-12-07 18:26:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:26:27,244 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:27,244 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 18:26:27,445 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:27,445 INFO L410 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2019-12-07 18:26:27,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:27,447 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310274422] [2019-12-07 18:26:27,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:27,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:27,613 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310274422] [2019-12-07 18:26:27,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:26:27,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-12-07 18:26:27,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581449645] [2019-12-07 18:26:27,614 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 18:26:27,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:27,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 18:26:27,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-12-07 18:26:27,616 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-12-07 18:26:27,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:27,928 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2019-12-07 18:26:27,928 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 18:26:27,928 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-12-07 18:26:27,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:27,930 INFO L225 Difference]: With dead ends: 32 [2019-12-07 18:26:27,931 INFO L226 Difference]: Without dead ends: 32 [2019-12-07 18:26:27,931 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:26:27,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-12-07 18:26:27,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2019-12-07 18:26:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:26:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-12-07 18:26:27,935 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2019-12-07 18:26:27,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:27,935 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-12-07 18:26:27,935 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 18:26:27,935 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-12-07 18:26:27,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-12-07 18:26:27,936 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:27,936 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 18:26:27,936 INFO L410 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:27,937 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2019-12-07 18:26:27,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:27,937 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588459210] [2019-12-07 18:26:27,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:28,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:28,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588459210] [2019-12-07 18:26:28,120 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010855418] [2019-12-07 18:26:28,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:28,193 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2019-12-07 18:26:28,194 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:26:28,225 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:26:28,225 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:28,230 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:28,230 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:28,231 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-12-07 18:26:28,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:26:28,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-12-07 18:26:28,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2019-12-07 18:26:28,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549857332] [2019-12-07 18:26:28,328 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-12-07 18:26:28,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:28,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-12-07 18:26:28,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-12-07 18:26:28,329 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 9 states. [2019-12-07 18:26:28,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:28,444 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2019-12-07 18:26:28,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:26:28,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2019-12-07 18:26:28,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:28,445 INFO L225 Difference]: With dead ends: 35 [2019-12-07 18:26:28,445 INFO L226 Difference]: Without dead ends: 35 [2019-12-07 18:26:28,446 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2019-12-07 18:26:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-12-07 18:26:28,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-12-07 18:26:28,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-12-07 18:26:28,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-12-07 18:26:28,449 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2019-12-07 18:26:28,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:28,449 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-12-07 18:26:28,449 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-12-07 18:26:28,450 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-12-07 18:26:28,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 18:26:28,450 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:28,450 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] [2019-12-07 18:26:28,651 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:28,651 INFO L410 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:28,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:28,652 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2019-12-07 18:26:28,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:28,652 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338702876] [2019-12-07 18:26:28,653 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:28,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338702876] [2019-12-07 18:26:28,800 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670978741] [2019-12-07 18:26:28,800 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:28,862 INFO L264 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 17 conjunts are in the unsatisfiable core [2019-12-07 18:26:28,863 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:26:28,868 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:26:28,868 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:28,872 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:28,872 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:28,872 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 18:26:28,886 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-12-07 18:26:28,887 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:28,889 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:28,890 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:28,890 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2019-12-07 18:26:28,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:28,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:26:28,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2019-12-07 18:26:28,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119191823] [2019-12-07 18:26:28,907 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:26:28,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:28,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:26:28,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:26:28,907 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2019-12-07 18:26:29,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:29,121 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2019-12-07 18:26:29,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:26:29,122 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2019-12-07 18:26:29,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:29,123 INFO L225 Difference]: With dead ends: 68 [2019-12-07 18:26:29,123 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 18:26:29,123 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:26:29,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 18:26:29,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 52. [2019-12-07 18:26:29,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:26:29,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2019-12-07 18:26:29,131 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2019-12-07 18:26:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:29,131 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2019-12-07 18:26:29,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:26:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2019-12-07 18:26:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 18:26:29,132 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:29,132 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, 1, 1, 1] [2019-12-07 18:26:29,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:29,333 INFO L410 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:29,333 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2019-12-07 18:26:29,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:29,334 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557101227] [2019-12-07 18:26:29,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:29,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:29,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-12-07 18:26:29,431 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557101227] [2019-12-07 18:26:29,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:26:29,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:26:29,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241625685] [2019-12-07 18:26:29,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:26:29,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:29,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:26:29,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:26:29,432 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2019-12-07 18:26:29,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:29,472 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2019-12-07 18:26:29,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:26:29,472 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-12-07 18:26:29,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:29,473 INFO L225 Difference]: With dead ends: 51 [2019-12-07 18:26:29,473 INFO L226 Difference]: Without dead ends: 29 [2019-12-07 18:26:29,474 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:26:29,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-12-07 18:26:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-12-07 18:26:29,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-12-07 18:26:29,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-12-07 18:26:29,477 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2019-12-07 18:26:29,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:29,477 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-12-07 18:26:29,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:26:29,478 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-12-07 18:26:29,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-12-07 18:26:29,478 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:29,479 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:26:29,479 INFO L410 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:29,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:29,479 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2019-12-07 18:26:29,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:29,480 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143627513] [2019-12-07 18:26:29,480 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:29,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:29,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:29,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143627513] [2019-12-07 18:26:29,741 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525510246] [2019-12-07 18:26:29,741 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:29,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 18:26:29,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:26:29,812 INFO L264 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 45 conjunts are in the unsatisfiable core [2019-12-07 18:26:29,813 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:26:29,833 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:26:29,833 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:29,839 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:29,839 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:29,839 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-12-07 18:26:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:30,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:26:30,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 24 [2019-12-07 18:26:30,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477253637] [2019-12-07 18:26:30,069 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-12-07 18:26:30,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:30,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-12-07 18:26:30,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=539, Unknown=0, NotChecked=0, Total=600 [2019-12-07 18:26:30,070 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 25 states. [2019-12-07 18:26:31,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:31,275 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2019-12-07 18:26:31,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-12-07 18:26:31,276 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 28 [2019-12-07 18:26:31,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:31,276 INFO L225 Difference]: With dead ends: 59 [2019-12-07 18:26:31,276 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 18:26:31,277 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=238, Invalid=1568, Unknown=0, NotChecked=0, Total=1806 [2019-12-07 18:26:31,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 18:26:31,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2019-12-07 18:26:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 18:26:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-12-07 18:26:31,280 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2019-12-07 18:26:31,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:31,281 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-12-07 18:26:31,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-12-07 18:26:31,281 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-12-07 18:26:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-12-07 18:26:31,282 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:31,282 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:26:31,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:31,482 INFO L410 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:31,483 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2019-12-07 18:26:31,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:31,483 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140532860] [2019-12-07 18:26:31,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:31,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:31,629 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:31,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140532860] [2019-12-07 18:26:31,630 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [422575754] [2019-12-07 18:26:31,630 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:31,704 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 18:26:31,704 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:26:31,705 INFO L264 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 35 conjunts are in the unsatisfiable core [2019-12-07 18:26:31,707 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:26:31,711 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 18:26:31,711 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:31,714 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:31,715 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:31,715 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-12-07 18:26:31,828 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 12 [2019-12-07 18:26:31,828 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:26:31,831 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:26:31,831 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:26:31,831 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:9 [2019-12-07 18:26:31,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:31,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:26:31,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2019-12-07 18:26:31,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896451427] [2019-12-07 18:26:31,906 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-12-07 18:26:31,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:31,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-12-07 18:26:31,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=503, Unknown=0, NotChecked=0, Total=552 [2019-12-07 18:26:31,907 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 24 states. [2019-12-07 18:26:33,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:33,028 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2019-12-07 18:26:33,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-12-07 18:26:33,028 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 33 [2019-12-07 18:26:33,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:33,029 INFO L225 Difference]: With dead ends: 54 [2019-12-07 18:26:33,029 INFO L226 Difference]: Without dead ends: 41 [2019-12-07 18:26:33,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2019-12-07 18:26:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-12-07 18:26:33,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-12-07 18:26:33,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-12-07 18:26:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-12-07 18:26:33,035 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2019-12-07 18:26:33,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:33,035 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-12-07 18:26:33,035 INFO L463 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-12-07 18:26:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-12-07 18:26:33,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-12-07 18:26:33,036 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:26:33,037 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:26:33,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:33,238 INFO L410 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:26:33,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:26:33,238 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2019-12-07 18:26:33,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:26:33,239 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866551863] [2019-12-07 18:26:33,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:26:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:26:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:26:33,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866551863] [2019-12-07 18:26:33,587 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612335347] [2019-12-07 18:26:33,587 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:33,649 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-12-07 18:26:33,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 18:26:33,650 INFO L264 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 47 conjunts are in the unsatisfiable core [2019-12-07 18:26:33,652 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:26:38,106 WARN L192 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 22 [2019-12-07 18:26:42,184 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 25 [2019-12-07 18:26:42,188 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-12-07 18:26:42,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:26:42,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 30 [2019-12-07 18:26:42,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69628134] [2019-12-07 18:26:42,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-12-07 18:26:42,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:26:42,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-12-07 18:26:42,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=852, Unknown=2, NotChecked=0, Total=930 [2019-12-07 18:26:42,190 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 31 states. [2019-12-07 18:26:51,981 WARN L192 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 48 [2019-12-07 18:26:52,932 WARN L192 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 40 [2019-12-07 18:26:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:26:53,070 INFO L93 Difference]: Finished difference Result 63 states and 66 transitions. [2019-12-07 18:26:53,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-12-07 18:26:53,071 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2019-12-07 18:26:53,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:26:53,071 INFO L225 Difference]: With dead ends: 63 [2019-12-07 18:26:53,071 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 18:26:53,072 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=447, Invalid=3209, Unknown=4, NotChecked=0, Total=3660 [2019-12-07 18:26:53,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 18:26:53,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 18:26:53,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 18:26:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 18:26:53,073 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2019-12-07 18:26:53,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:26:53,073 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:26:53,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-12-07 18:26:53,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:26:53,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 18:26:53,273 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:26:53,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:26:53 BoogieIcfgContainer [2019-12-07 18:26:53,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:26:53,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:26:53,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:26:53,280 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:26:53,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:26:26" (3/4) ... [2019-12-07 18:26:53,282 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 18:26:53,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2019-12-07 18:26:53,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2019-12-07 18:26:53,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2019-12-07 18:26:53,286 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2019-12-07 18:26:53,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2019-12-07 18:26:53,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2019-12-07 18:26:53,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2019-12-07 18:26:53,287 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2019-12-07 18:26:53,289 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2019-12-07 18:26:53,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2019-12-07 18:26:53,290 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 18:26:53,323 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_0c0e1bbc-2549-4496-8583-0fc9559d51b1/bin/uautomizer/witness.graphml [2019-12-07 18:26:53,323 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:26:53,324 INFO L168 Benchmark]: Toolchain (without parser) took 27494.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 934.4 MB in the beginning and 963.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 176.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:53,325 INFO L168 Benchmark]: CDTParser took 0.14 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 18:26:53,325 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:53,325 INFO L168 Benchmark]: Boogie Preprocessor took 35.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:53,325 INFO L168 Benchmark]: RCFGBuilder took 301.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:53,326 INFO L168 Benchmark]: TraceAbstraction took 26820.82 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 965.8 MB in the end (delta: 101.6 MB). Peak memory consumption was 173.5 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:53,326 INFO L168 Benchmark]: Witness Printer took 43.83 ms. Allocated memory is still 1.2 GB. Free memory was 965.8 MB in the beginning and 963.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:26:53,327 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 289.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.2 MB). Free memory was 934.4 MB in the beginning and 1.1 GB in the end (delta: -182.8 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.64 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 301.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 44.4 MB). Peak memory consumption was 44.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 26820.82 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 965.8 MB in the end (delta: 101.6 MB). Peak memory consumption was 173.5 MB. Max. memory is 11.5 GB. * Witness Printer took 43.83 ms. Allocated memory is still 1.2 GB. Free memory was 965.8 MB in the beginning and 963.4 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Result: SAFE, OverallTime: 26.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 14.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 204 SDtfs, 531 SDslu, 601 SDs, 0 SdLazy, 2156 SolverSat, 169 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 336 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 201 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1175 ImplicationChecksByTransitivity, 18.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=6, 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, 56 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 377 NumberOfCodeBlocks, 377 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 361 ConstructedInterpolants, 2 QuantifiedInterpolants, 84904 SizeOfPredicates, 50 NumberOfNonLiveVariables, 789 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 16 InterpolantComputations, 5 PerfectInterpolantSequences, 25/108 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 correct! Received shutdown request...