./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe.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_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/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 efc45e5708d4a9b560055cd5abf7b168f9024833 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:40:37,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:40:37,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:40:37,688 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:40:37,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:40:37,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:40:37,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:40:37,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:40:37,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:40:37,694 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:40:37,695 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:40:37,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:40:37,696 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:40:37,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:40:37,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:40:37,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:40:37,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:40:37,699 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:40:37,701 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:40:37,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:40:37,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:40:37,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:40:37,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:40:37,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:40:37,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:40:37,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:40:37,707 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:40:37,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:40:37,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:40:37,708 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:40:37,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:40:37,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:40:37,709 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:40:37,710 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:40:37,711 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:40:37,711 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:40:37,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:40:37,712 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:40:37,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:40:37,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:40:37,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:40:37,714 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-12-07 18:40:37,726 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:40:37,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:40:37,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:40:37,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:40:37,727 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:40:37,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:40:37,728 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:40:37,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:40:37,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:40:37,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:40:37,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:40:37,729 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 18:40:37,729 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 18:40:37,729 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 18:40:37,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 18:40:37,730 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 18:40:37,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:40:37,730 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:40:37,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:40:37,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:40:37,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 18:40:37,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 18:40:37,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 18:40:37,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:40:37,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 18:40:37,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:40:37,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 18:40:37,732 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:40:37,732 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_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/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 -> efc45e5708d4a9b560055cd5abf7b168f9024833 [2019-12-07 18:40:37,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:40:37,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:40:37,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:40:37,855 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:40:37,856 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:40:37,856 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/../../sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i [2019-12-07 18:40:37,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/data/a97962221/30ede1769bbe469faaea0c670bba16c6/FLAG4c812bebb [2019-12-07 18:40:38,275 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:40:38,276 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/sv-benchmarks/c/array-memsafety/cstrchr_unsafe.i [2019-12-07 18:40:38,285 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/data/a97962221/30ede1769bbe469faaea0c670bba16c6/FLAG4c812bebb [2019-12-07 18:40:38,293 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/data/a97962221/30ede1769bbe469faaea0c670bba16c6 [2019-12-07 18:40:38,295 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:40:38,295 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-12-07 18:40:38,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:40:38,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:40:38,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:40:38,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,300 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4606df45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38, skipping insertion in model container [2019-12-07 18:40:38,301 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:40:38,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:40:38,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:40:38,539 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:40:38,566 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:40:38,597 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:40:38,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38 WrapperNode [2019-12-07 18:40:38,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:40:38,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:40:38,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:40:38,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:40:38,606 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... [2019-12-07 18:40:38,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:40:38,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:40:38,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:40:38,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:40:38,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/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 18:40:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-12-07 18:40:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:40:38,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure build_nondet_String [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure cstrchr [2019-12-07 18:40:38,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-12-07 18:40:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-12-07 18:40:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-12-07 18:40:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-12-07 18:40:38,675 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-12-07 18:40:38,676 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-12-07 18:40:38,677 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-12-07 18:40:38,678 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-12-07 18:40:38,679 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-12-07 18:40:38,680 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-12-07 18:40:38,681 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-12-07 18:40:38,682 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-12-07 18:40:38,683 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-12-07 18:40:38,684 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-12-07 18:40:38,685 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-12-07 18:40:38,686 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure build_nondet_String [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 18:40:38,687 INFO L130 BoogieDeclarations]: Found specification of procedure cstrchr [2019-12-07 18:40:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 18:40:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-12-07 18:40:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 18:40:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-12-07 18:40:38,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:40:38,953 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:40:38,953 INFO L287 CfgBuilder]: Removed 2 assume(true) statements. [2019-12-07 18:40:38,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:40:38 BoogieIcfgContainer [2019-12-07 18:40:38,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:40:38,955 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 18:40:38,955 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 18:40:38,957 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 18:40:38,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 06:40:38" (1/3) ... [2019-12-07 18:40:38,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909cd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:40:38, skipping insertion in model container [2019-12-07 18:40:38,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:40:38" (2/3) ... [2019-12-07 18:40:38,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7909cd43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 06:40:38, skipping insertion in model container [2019-12-07 18:40:38,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:40:38" (3/3) ... [2019-12-07 18:40:38,960 INFO L109 eAbstractionObserver]: Analyzing ICFG cstrchr_unsafe.i [2019-12-07 18:40:38,966 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 18:40:38,970 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 16 error locations. [2019-12-07 18:40:38,977 INFO L249 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2019-12-07 18:40:38,989 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 18:40:38,989 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 18:40:38,989 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 18:40:38,989 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:40:38,990 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:40:38,990 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 18:40:38,990 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:40:38,990 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 18:40:39,000 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2019-12-07 18:40:39,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:40:39,006 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:39,006 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:39,007 INFO L410 AbstractCegarLoop]: === Iteration 1 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:39,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:39,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183926, now seen corresponding path program 1 times [2019-12-07 18:40:39,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:39,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554724134] [2019-12-07 18:40:39,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,131 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 18:40:39,131 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554724134] [2019-12-07 18:40:39,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:39,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:40:39,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40507498] [2019-12-07 18:40:39,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 18:40:39,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:39,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 18:40:39,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:40:39,146 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2019-12-07 18:40:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:39,213 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2019-12-07 18:40:39,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 18:40:39,215 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 18:40:39,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:39,221 INFO L225 Difference]: With dead ends: 56 [2019-12-07 18:40:39,221 INFO L226 Difference]: Without dead ends: 53 [2019-12-07 18:40:39,222 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 18:40:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-12-07 18:40:39,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-12-07 18:40:39,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 18:40:39,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2019-12-07 18:40:39,247 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 11 [2019-12-07 18:40:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:39,247 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2019-12-07 18:40:39,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 18:40:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2019-12-07 18:40:39,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:40:39,247 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:39,247 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:39,248 INFO L410 AbstractCegarLoop]: === Iteration 2 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:39,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:39,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183616, now seen corresponding path program 1 times [2019-12-07 18:40:39,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:39,248 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538557610] [2019-12-07 18:40:39,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,289 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 18:40:39,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538557610] [2019-12-07 18:40:39,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:39,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:40:39,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475144714] [2019-12-07 18:40:39,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 18:40:39,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:40:39,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:40:39,291 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 4 states. [2019-12-07 18:40:39,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:39,371 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2019-12-07 18:40:39,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:40:39,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-12-07 18:40:39,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:39,373 INFO L225 Difference]: With dead ends: 51 [2019-12-07 18:40:39,373 INFO L226 Difference]: Without dead ends: 51 [2019-12-07 18:40:39,374 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 18:40:39,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-12-07 18:40:39,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-12-07 18:40:39,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-12-07 18:40:39,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-12-07 18:40:39,380 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 11 [2019-12-07 18:40:39,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:39,380 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-12-07 18:40:39,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 18:40:39,380 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-12-07 18:40:39,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:40:39,381 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:39,381 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:39,381 INFO L410 AbstractCegarLoop]: === Iteration 3 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:39,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183617, now seen corresponding path program 1 times [2019-12-07 18:40:39,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:39,382 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081029268] [2019-12-07 18:40:39,382 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,443 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 18:40:39,443 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081029268] [2019-12-07 18:40:39,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:39,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:40:39,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866681205] [2019-12-07 18:40:39,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:40:39,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:39,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:40:39,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:40:39,445 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 5 states. [2019-12-07 18:40:39,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:39,524 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2019-12-07 18:40:39,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:40:39,524 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:40:39,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:39,525 INFO L225 Difference]: With dead ends: 50 [2019-12-07 18:40:39,526 INFO L226 Difference]: Without dead ends: 50 [2019-12-07 18:40:39,526 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:40:39,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-12-07 18:40:39,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2019-12-07 18:40:39,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-12-07 18:40:39,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2019-12-07 18:40:39,532 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 11 [2019-12-07 18:40:39,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:39,532 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2019-12-07 18:40:39,532 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:40:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2019-12-07 18:40:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:40:39,533 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:39,533 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:39,533 INFO L410 AbstractCegarLoop]: === Iteration 4 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:39,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:39,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1524183670, now seen corresponding path program 1 times [2019-12-07 18:40:39,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:39,534 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326353218] [2019-12-07 18:40:39,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:39,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,579 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 18:40:39,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326353218] [2019-12-07 18:40:39,579 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:39,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:40:39,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562191165] [2019-12-07 18:40:39,580 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:40:39,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:39,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:40:39,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:40:39,581 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 5 states. [2019-12-07 18:40:39,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:39,649 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2019-12-07 18:40:39,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:40:39,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:40:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:39,651 INFO L225 Difference]: With dead ends: 56 [2019-12-07 18:40:39,652 INFO L226 Difference]: Without dead ends: 56 [2019-12-07 18:40:39,652 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:40:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-12-07 18:40:39,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2019-12-07 18:40:39,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-12-07 18:40:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2019-12-07 18:40:39,656 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 11 [2019-12-07 18:40:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:39,656 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2019-12-07 18:40:39,656 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:40:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2019-12-07 18:40:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 18:40:39,657 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:39,657 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:39,657 INFO L410 AbstractCegarLoop]: === Iteration 5 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:39,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:39,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1524243252, now seen corresponding path program 1 times [2019-12-07 18:40:39,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:39,658 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245395716] [2019-12-07 18:40:39,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,705 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 18:40:39,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245395716] [2019-12-07 18:40:39,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:39,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 18:40:39,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638769192] [2019-12-07 18:40:39,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:40:39,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:39,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:40:39,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:40:39,707 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 5 states. [2019-12-07 18:40:39,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:39,809 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2019-12-07 18:40:39,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 18:40:39,809 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2019-12-07 18:40:39,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:39,810 INFO L225 Difference]: With dead ends: 60 [2019-12-07 18:40:39,810 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 18:40:39,810 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 18:40:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 18:40:39,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2019-12-07 18:40:39,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2019-12-07 18:40:39,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2019-12-07 18:40:39,814 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 11 [2019-12-07 18:40:39,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:39,814 INFO L462 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2019-12-07 18:40:39,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:40:39,815 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2019-12-07 18:40:39,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 18:40:39,815 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:39,815 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:39,815 INFO L410 AbstractCegarLoop]: === Iteration 6 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:39,816 INFO L82 PathProgramCache]: Analyzing trace with hash -583933833, now seen corresponding path program 1 times [2019-12-07 18:40:39,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:39,816 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488835560] [2019-12-07 18:40:39,816 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,874 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 18:40:39,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488835560] [2019-12-07 18:40:39,874 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996485921] [2019-12-07 18:40:39,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/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 18:40:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:39,940 INFO L264 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 11 conjunts are in the unsatisfiable core [2019-12-07 18:40:39,943 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 18:40:39,981 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 18:40:39,981 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 18:40:39,988 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 18:40:39,988 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 18:40:39,989 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-12-07 18:40:40,001 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 18:40:40,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-12-07 18:40:40,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 6 [2019-12-07 18:40:40,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040328967] [2019-12-07 18:40:40,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 18:40:40,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:40,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 18:40:40,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:40:40,002 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 7 states. [2019-12-07 18:40:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:40,112 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2019-12-07 18:40:40,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-12-07 18:40:40,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-12-07 18:40:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:40,113 INFO L225 Difference]: With dead ends: 59 [2019-12-07 18:40:40,113 INFO L226 Difference]: Without dead ends: 59 [2019-12-07 18:40:40,113 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 18:40:40,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-12-07 18:40:40,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 51. [2019-12-07 18:40:40,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-12-07 18:40:40,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2019-12-07 18:40:40,118 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 15 [2019-12-07 18:40:40,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:40,119 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2019-12-07 18:40:40,119 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 18:40:40,119 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2019-12-07 18:40:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 18:40:40,120 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:40,120 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:40,321 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 18:40:40,322 INFO L410 AbstractCegarLoop]: === Iteration 7 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:40,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:40,323 INFO L82 PathProgramCache]: Analyzing trace with hash -269979680, now seen corresponding path program 1 times [2019-12-07 18:40:40,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:40,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477809318] [2019-12-07 18:40:40,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:40,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,431 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 18:40:40,432 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477809318] [2019-12-07 18:40:40,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:40,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-12-07 18:40:40,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182069684] [2019-12-07 18:40:40,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 18:40:40,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 18:40:40,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-12-07 18:40:40,433 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 10 states. [2019-12-07 18:40:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:40,593 INFO L93 Difference]: Finished difference Result 47 states and 51 transitions. [2019-12-07 18:40:40,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 18:40:40,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2019-12-07 18:40:40,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:40,594 INFO L225 Difference]: With dead ends: 47 [2019-12-07 18:40:40,594 INFO L226 Difference]: Without dead ends: 47 [2019-12-07 18:40:40,594 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:40:40,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-12-07 18:40:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-12-07 18:40:40,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-12-07 18:40:40,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2019-12-07 18:40:40,597 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 18 [2019-12-07 18:40:40,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:40,597 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2019-12-07 18:40:40,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 18:40:40,597 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2019-12-07 18:40:40,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-12-07 18:40:40,598 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:40,598 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 18:40:40,598 INFO L410 AbstractCegarLoop]: === Iteration 8 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:40,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:40,598 INFO L82 PathProgramCache]: Analyzing trace with hash -269979679, now seen corresponding path program 1 times [2019-12-07 18:40:40,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:40,599 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519970200] [2019-12-07 18:40:40,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:40,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,700 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 18:40:40,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519970200] [2019-12-07 18:40:40,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:40,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-12-07 18:40:40,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378063861] [2019-12-07 18:40:40,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:40:40,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:40,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:40:40,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:40:40,701 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 12 states. [2019-12-07 18:40:40,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:40,921 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2019-12-07 18:40:40,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 18:40:40,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2019-12-07 18:40:40,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:40,922 INFO L225 Difference]: With dead ends: 57 [2019-12-07 18:40:40,922 INFO L226 Difference]: Without dead ends: 57 [2019-12-07 18:40:40,922 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2019-12-07 18:40:40,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-12-07 18:40:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2019-12-07 18:40:40,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-12-07 18:40:40,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2019-12-07 18:40:40,925 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 18 [2019-12-07 18:40:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:40,925 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2019-12-07 18:40:40,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:40:40,926 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2019-12-07 18:40:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-12-07 18:40:40,926 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:40,926 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] [2019-12-07 18:40:40,926 INFO L410 AbstractCegarLoop]: === Iteration 9 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:40,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:40,926 INFO L82 PathProgramCache]: Analyzing trace with hash -463192456, now seen corresponding path program 1 times [2019-12-07 18:40:40,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:40,927 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222233883] [2019-12-07 18:40:40,927 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:40,962 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 18:40:40,962 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222233883] [2019-12-07 18:40:40,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:40,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-12-07 18:40:40,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3391176] [2019-12-07 18:40:40,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 18:40:40,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:40,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 18:40:40,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 18:40:40,963 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand 5 states. [2019-12-07 18:40:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:41,029 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2019-12-07 18:40:41,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:40:41,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-12-07 18:40:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:41,030 INFO L225 Difference]: With dead ends: 55 [2019-12-07 18:40:41,030 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 18:40:41,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 18:40:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 18:40:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2019-12-07 18:40:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2019-12-07 18:40:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2019-12-07 18:40:41,033 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 22 [2019-12-07 18:40:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:41,033 INFO L462 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2019-12-07 18:40:41,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 18:40:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2019-12-07 18:40:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 18:40:41,034 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:41,034 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 18:40:41,034 INFO L410 AbstractCegarLoop]: === Iteration 10 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1542788213, now seen corresponding path program 1 times [2019-12-07 18:40:41,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:41,034 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012913789] [2019-12-07 18:40:41,035 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:41,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:41,180 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 18:40:41,180 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012913789] [2019-12-07 18:40:41,180 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:41,181 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-12-07 18:40:41,181 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733721835] [2019-12-07 18:40:41,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-12-07 18:40:41,181 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:41,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-12-07 18:40:41,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2019-12-07 18:40:41,181 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 14 states. [2019-12-07 18:40:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:41,505 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2019-12-07 18:40:41,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-12-07 18:40:41,505 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 24 [2019-12-07 18:40:41,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:41,506 INFO L225 Difference]: With dead ends: 81 [2019-12-07 18:40:41,506 INFO L226 Difference]: Without dead ends: 81 [2019-12-07 18:40:41,506 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2019-12-07 18:40:41,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-12-07 18:40:41,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 71. [2019-12-07 18:40:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-12-07 18:40:41,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 78 transitions. [2019-12-07 18:40:41,510 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 78 transitions. Word has length 24 [2019-12-07 18:40:41,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:41,510 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 78 transitions. [2019-12-07 18:40:41,510 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-12-07 18:40:41,511 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 78 transitions. [2019-12-07 18:40:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-12-07 18:40:41,511 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:41,511 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 18:40:41,511 INFO L410 AbstractCegarLoop]: === Iteration 11 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:41,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:41,512 INFO L82 PathProgramCache]: Analyzing trace with hash -45559689, now seen corresponding path program 1 times [2019-12-07 18:40:41,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:41,512 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320579242] [2019-12-07 18:40:41,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:41,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:41,660 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 18:40:41,660 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320579242] [2019-12-07 18:40:41,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:41,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-12-07 18:40:41,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908739766] [2019-12-07 18:40:41,661 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-12-07 18:40:41,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:41,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-12-07 18:40:41,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-12-07 18:40:41,661 INFO L87 Difference]: Start difference. First operand 71 states and 78 transitions. Second operand 15 states. [2019-12-07 18:40:41,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:41,973 INFO L93 Difference]: Finished difference Result 101 states and 109 transitions. [2019-12-07 18:40:41,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 18:40:41,974 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2019-12-07 18:40:41,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:41,974 INFO L225 Difference]: With dead ends: 101 [2019-12-07 18:40:41,975 INFO L226 Difference]: Without dead ends: 101 [2019-12-07 18:40:41,975 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2019-12-07 18:40:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2019-12-07 18:40:41,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 72. [2019-12-07 18:40:41,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-12-07 18:40:41,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2019-12-07 18:40:41,979 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 24 [2019-12-07 18:40:41,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:41,980 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2019-12-07 18:40:41,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-12-07 18:40:41,980 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2019-12-07 18:40:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:40:41,981 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:41,981 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, 1, 1, 1] [2019-12-07 18:40:41,981 INFO L410 AbstractCegarLoop]: === Iteration 12 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:41,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:41,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1919056224, now seen corresponding path program 1 times [2019-12-07 18:40:41,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:41,982 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257277278] [2019-12-07 18:40:41,982 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,068 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 18:40:42,068 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257277278] [2019-12-07 18:40:42,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:42,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-12-07 18:40:42,068 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775465088] [2019-12-07 18:40:42,068 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-12-07 18:40:42,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:42,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-12-07 18:40:42,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2019-12-07 18:40:42,069 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 12 states. [2019-12-07 18:40:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:42,297 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2019-12-07 18:40:42,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-12-07 18:40:42,297 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2019-12-07 18:40:42,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:42,298 INFO L225 Difference]: With dead ends: 80 [2019-12-07 18:40:42,298 INFO L226 Difference]: Without dead ends: 80 [2019-12-07 18:40:42,298 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2019-12-07 18:40:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-12-07 18:40:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2019-12-07 18:40:42,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2019-12-07 18:40:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 88 transitions. [2019-12-07 18:40:42,302 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 88 transitions. Word has length 27 [2019-12-07 18:40:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:42,302 INFO L462 AbstractCegarLoop]: Abstraction has 79 states and 88 transitions. [2019-12-07 18:40:42,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-12-07 18:40:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 88 transitions. [2019-12-07 18:40:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:40:42,303 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:42,303 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, 1, 1, 1] [2019-12-07 18:40:42,303 INFO L410 AbstractCegarLoop]: === Iteration 13 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:42,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:42,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1919056223, now seen corresponding path program 1 times [2019-12-07 18:40:42,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:42,304 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426712051] [2019-12-07 18:40:42,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:40:42,446 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 18:40:42,446 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426712051] [2019-12-07 18:40:42,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:40:42,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-12-07 18:40:42,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173614896] [2019-12-07 18:40:42,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-12-07 18:40:42,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:40:42,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-12-07 18:40:42,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2019-12-07 18:40:42,447 INFO L87 Difference]: Start difference. First operand 79 states and 88 transitions. Second operand 13 states. [2019-12-07 18:40:42,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:40:42,700 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2019-12-07 18:40:42,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-12-07 18:40:42,701 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2019-12-07 18:40:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 18:40:42,701 INFO L225 Difference]: With dead ends: 88 [2019-12-07 18:40:42,702 INFO L226 Difference]: Without dead ends: 88 [2019-12-07 18:40:42,702 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2019-12-07 18:40:42,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-12-07 18:40:42,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 84. [2019-12-07 18:40:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-12-07 18:40:42,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2019-12-07 18:40:42,707 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 27 [2019-12-07 18:40:42,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 18:40:42,707 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2019-12-07 18:40:42,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-12-07 18:40:42,707 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2019-12-07 18:40:42,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 18:40:42,708 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 18:40:42,708 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, 1, 1, 1] [2019-12-07 18:40:42,708 INFO L410 AbstractCegarLoop]: === Iteration 14 === [build_nondet_StringErr3REQUIRES_VIOLATION, build_nondet_StringErr2REQUIRES_VIOLATION, build_nondet_StringErr1REQUIRES_VIOLATION, build_nondet_StringErr0REQUIRES_VIOLATION, cstrchrErr0REQUIRES_VIOLATION, cstrchrErr5REQUIRES_VIOLATION, cstrchrErr1REQUIRES_VIOLATION, cstrchrErr3REQUIRES_VIOLATION, cstrchrErr2REQUIRES_VIOLATION, cstrchrErr4REQUIRES_VIOLATION, mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr5ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr1REQUIRES_VIOLATION]=== [2019-12-07 18:40:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:40:42,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1917209182, now seen corresponding path program 1 times [2019-12-07 18:40:42,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:40:42,709 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541982293] [2019-12-07 18:40:42,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:40:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:40:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:40:42,740 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:40:42,740 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 18:40:42,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 06:40:42 BoogieIcfgContainer [2019-12-07 18:40:42,764 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 18:40:42,764 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:40:42,764 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:40:42,764 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:40:42,765 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:40:38" (3/4) ... [2019-12-07 18:40:42,766 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 18:40:42,799 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5f371fb9-9f94-4c7e-8fb2-ac248dc087fc/bin/uautomizer/witness.graphml [2019-12-07 18:40:42,799 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:40:42,800 INFO L168 Benchmark]: Toolchain (without parser) took 4504.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 941.9 MB in the beginning and 845.6 MB in the end (delta: 96.3 MB). Peak memory consumption was 248.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:40:42,800 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:40:42,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -147.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. [2019-12-07 18:40:42,801 INFO L168 Benchmark]: Boogie Preprocessor took 36.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 18:40:42,802 INFO L168 Benchmark]: RCFGBuilder took 318.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. [2019-12-07 18:40:42,802 INFO L168 Benchmark]: TraceAbstraction took 3809.42 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.0 GB in the beginning and 852.2 MB in the end (delta: 179.6 MB). Peak memory consumption was 227.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:40:42,803 INFO L168 Benchmark]: Witness Printer took 34.50 ms. Allocated memory is still 1.2 GB. Free memory was 852.2 MB in the beginning and 845.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:40:42,805 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 302.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 941.9 MB in the beginning and 1.1 GB in the end (delta: -147.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 36.82 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 318.83 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 55.4 MB). Peak memory consumption was 55.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3809.42 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 47.7 MB). Free memory was 1.0 GB in the beginning and 852.2 MB in the end (delta: 179.6 MB). Peak memory consumption was 227.3 MB. Max. memory is 11.5 GB. * Witness Printer took 34.50 ms. Allocated memory is still 1.2 GB. Free memory was 852.2 MB in the beginning and 845.6 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 537]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L536] CALL, EXPR build_nondet_String() [L515] int length = __VERIFIER_nondet_int(); [L516] COND TRUE length < 1 [L517] length = 1 VAL [length=1] [L519] char* nondetString = (char*) malloc(length * sizeof(char)); [L521] int i = 0; VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L521] COND FALSE !(i < length - 1) VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L526] nondetString[length-1] = '\0' VAL [i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L527] return nondetString; VAL [\result={-1:0}, i=0, length=1, malloc(length * sizeof(char))={-1:0}, nondetString={-1:0}] [L536] RET, EXPR build_nondet_String() VAL [build_nondet_String()={-1:0}] [L536] char* s = build_nondet_String(); [L537] CALL cstrchr(s,__VERIFIER_nondet_int()) VAL [\old(c)=1, s={-1:0}] [L531] EXPR \read(*s) VAL [\old(c)=1, \read(*s)=0, c=1, s={-1:0}, s={-1:0}] [L531] *s != '\0' && *s != (char)c VAL [*s != '\0' && *s != (char)c=0, \old(c)=1, \read(*s)=0, c=1, s={-1:0}, s={-1:0}] [L531] COND FALSE !(*s != '\0' && *s != (char)c) [L533] EXPR \read(*s) VAL [\old(c)=1, \read(*s)=0, c=1, s={-1:0}, s={-1:0}] [L533] EXPR (*s == c) ? (char *) s : 0 VAL [(*s == c) ? (char *) s : 0={0:0}, \old(c)=1, \read(*s)=0, c=1, s={-1:0}, s={-1:0}] [L533] return ( (*s == c) ? (char *) s : 0 ); [L537] RET cstrchr(s,__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=1, cstrchr(s,__VERIFIER_nondet_int())={0:0}, s={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 71 locations, 16 error locations. Result: UNSAFE, OverallTime: 3.7s, OverallIterations: 14, TraceHistogramMax: 2, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 456 SDtfs, 844 SDslu, 807 SDs, 0 SdLazy, 2463 SolverSat, 122 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 193 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=13, 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, 13 MinimizatonAttempts, 66 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 272 NumberOfCodeBlocks, 272 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 231 ConstructedInterpolants, 0 QuantifiedInterpolants, 20896 SizeOfPredicates, 3 NumberOfNonLiveVariables, 69 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 5/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...