./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0158-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8d31f386 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0158-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 8faa7ab505618d5a6c508309045d02d3235f2a80 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.multireach-323-8d31f38 [2021-07-06 09:23:51,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-06 09:23:51,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-06 09:23:51,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-06 09:23:51,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-06 09:23:51,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-06 09:23:51,076 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-06 09:23:51,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-06 09:23:51,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-06 09:23:51,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-06 09:23:51,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-06 09:23:51,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-06 09:23:51,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-06 09:23:51,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-06 09:23:51,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-06 09:23:51,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-06 09:23:51,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-06 09:23:51,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-06 09:23:51,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-06 09:23:51,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-06 09:23:51,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-06 09:23:51,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-06 09:23:51,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-06 09:23:51,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-06 09:23:51,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-06 09:23:51,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-06 09:23:51,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-06 09:23:51,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-06 09:23:51,134 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-06 09:23:51,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-06 09:23:51,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-06 09:23:51,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-06 09:23:51,135 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-06 09:23:51,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-06 09:23:51,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-06 09:23:51,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-06 09:23:51,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-06 09:23:51,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-06 09:23:51,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-06 09:23:51,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-06 09:23:51,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-06 09:23:51,141 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-07-06 09:23:51,173 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-06 09:23:51,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-06 09:23:51,175 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-06 09:23:51,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-06 09:23:51,175 INFO L138 SettingsManager]: * Use SBE=true [2021-07-06 09:23:51,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-06 09:23:51,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-06 09:23:51,176 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-07-06 09:23:51,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-06 09:23:51,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-07-06 09:23:51,177 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-06 09:23:51,178 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-06 09:23:51,178 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-06 09:23:51,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-06 09:23:51,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-06 09:23:51,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 09:23:51,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-06 09:23:51,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-06 09:23:51,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-06 09:23:51,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-06 09:23:51,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-07-06 09:23:51,179 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8faa7ab505618d5a6c508309045d02d3235f2a80 [2021-07-06 09:23:51,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-06 09:23:51,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-06 09:23:51,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-06 09:23:51,420 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-06 09:23:51,421 INFO L275 PluginConnector]: CDTParser initialized [2021-07-06 09:23:51,421 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0158-1.i [2021-07-06 09:23:51,465 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392d94d1c/d0fb875500994c6bacf91e4aca007c78/FLAG5045fa9f2 [2021-07-06 09:23:51,827 INFO L306 CDTParser]: Found 1 translation units. [2021-07-06 09:23:51,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0158-1.i [2021-07-06 09:23:51,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392d94d1c/d0fb875500994c6bacf91e4aca007c78/FLAG5045fa9f2 [2021-07-06 09:23:52,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/392d94d1c/d0fb875500994c6bacf91e4aca007c78 [2021-07-06 09:23:52,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-06 09:23:52,197 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-06 09:23:52,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-06 09:23:52,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-06 09:23:52,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-06 09:23:52,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c3ec00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52, skipping insertion in model container [2021-07-06 09:23:52,205 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-06 09:23:52,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-06 09:23:52,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 09:23:52,417 INFO L203 MainTranslator]: Completed pre-run [2021-07-06 09:23:52,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-06 09:23:52,493 INFO L208 MainTranslator]: Completed translation [2021-07-06 09:23:52,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52 WrapperNode [2021-07-06 09:23:52,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-06 09:23:52,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-06 09:23:52,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-06 09:23:52,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-06 09:23:52,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,521 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-06 09:23:52,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-06 09:23:52,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-06 09:23:52,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-06 09:23:52,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (1/1) ... [2021-07-06 09:23:52,533 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-06 09:23:52,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-07-06 09:23:52,553 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-07-06 09:23:52,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-07-06 09:23:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-07-06 09:23:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-06 09:23:52,583 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-07-06 09:23:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-07-06 09:23:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-07-06 09:23:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-07-06 09:23:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-07-06 09:23:52,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-07-06 09:23:52,585 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-07-06 09:23:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-07-06 09:23:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-07-06 09:23:52,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-07-06 09:23:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-07-06 09:23:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-07-06 09:23:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-06 09:23:52,586 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-07-06 09:23:52,587 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-07-06 09:23:52,588 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-07-06 09:23:52,589 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-07-06 09:23:52,590 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-07-06 09:23:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-07-06 09:23:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-07-06 09:23:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-07-06 09:23:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-07-06 09:23:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-07-06 09:23:52,591 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-07-06 09:23:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-07-06 09:23:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-07-06 09:23:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-07-06 09:23:52,592 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-07-06 09:23:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-07-06 09:23:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-07-06 09:23:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-07-06 09:23:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-07-06 09:23:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-07-06 09:23:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-07-06 09:23:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-07-06 09:23:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-07-06 09:23:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-07-06 09:23:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-07-06 09:23:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-07-06 09:23:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-07-06 09:23:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-07-06 09:23:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-07-06 09:23:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-07-06 09:23:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-07-06 09:23:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-07-06 09:23:52,600 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-07-06 09:23:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-07-06 09:23:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-07-06 09:23:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-07-06 09:23:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-07-06 09:23:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-07-06 09:23:52,601 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-07-06 09:23:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-07-06 09:23:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-07-06 09:23:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-07-06 09:23:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-07-06 09:23:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-07-06 09:23:52,602 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-07-06 09:23:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-07-06 09:23:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-07-06 09:23:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-07-06 09:23:52,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-06 09:23:52,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-07-06 09:23:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-06 09:23:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-06 09:23:52,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-06 09:23:52,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-07-06 09:23:52,944 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-06 09:23:52,944 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-06 09:23:52,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 09:23:52 BoogieIcfgContainer [2021-07-06 09:23:52,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-06 09:23:52,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-06 09:23:52,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-06 09:23:52,949 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-06 09:23:52,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.07 09:23:52" (1/3) ... [2021-07-06 09:23:52,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4259c6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 09:23:52, skipping insertion in model container [2021-07-06 09:23:52,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.07 09:23:52" (2/3) ... [2021-07-06 09:23:52,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4259c6ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.07 09:23:52, skipping insertion in model container [2021-07-06 09:23:52,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 09:23:52" (3/3) ... [2021-07-06 09:23:52,950 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158-1.i [2021-07-06 09:23:52,955 INFO L198 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-06 09:23:52,956 INFO L158 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-07-06 09:23:52,991 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr0REQUIRES_VIOLATION ======== [2021-07-06 09:23:52,997 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:52,997 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 09:23:53,011 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,011 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,011 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr0REQUIRES_VIOLATION] === [2021-07-06 09:23:53,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1025377557, now seen corresponding path program 1 times [2021-07-06 09:23:53,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142992263] [2021-07-06 09:23:53,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,021 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,124 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,125 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,125 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,126 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,186 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,186 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,188 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142992263] [2021-07-06 09:23:53,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142992263] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,190 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 09:23:53,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749572208] [2021-07-06 09:23:53,200 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 09:23:53,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 09:23:53,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,213 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,270 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-07-06 09:23:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:53,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-07-06 09:23:53,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,275 INFO L225 Difference]: With dead ends: 23 [2021-07-06 09:23:53,276 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,277 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 09:23:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,292 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,292 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,292 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,294 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-06 09:23:53,294 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,297 INFO L303 ceAbstractionStarter]: Result for error location mainErr0REQUIRES_VIOLATION was SAFE (1/10) [2021-07-06 09:23:53,299 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr1REQUIRES_VIOLATION ======== [2021-07-06 09:23:53,300 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,300 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-07-06 09:23:53,302 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,302 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,303 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr1REQUIRES_VIOLATION] === [2021-07-06 09:23:53,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1025377556, now seen corresponding path program 1 times [2021-07-06 09:23:53,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,304 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582751248] [2021-07-06 09:23:53,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,304 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,360 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,361 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,366 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 09:23:53,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:53,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,400 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,400 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582751248] [2021-07-06 09:23:53,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582751248] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 09:23:53,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318849396] [2021-07-06 09:23:53,402 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 09:23:53,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 09:23:53,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,406 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,446 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-07-06 09:23:53,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:53,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-07-06 09:23:53,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,446 INFO L225 Difference]: With dead ends: 23 [2021-07-06 09:23:53,447 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,447 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-07-06 09:23:53,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,448 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,448 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,449 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,449 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-06 09:23:53,449 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,449 INFO L303 ceAbstractionStarter]: Result for error location mainErr1REQUIRES_VIOLATION was SAFE (2/10) [2021-07-06 09:23:53,451 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr2REQUIRES_VIOLATION ======== [2021-07-06 09:23:53,453 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,455 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,457 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-06 09:23:53,458 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,458 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,459 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION] === [2021-07-06 09:23:53,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1721933206, now seen corresponding path program 1 times [2021-07-06 09:23:53,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351979637] [2021-07-06 09:23:53,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,464 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,495 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,495 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,496 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:53,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,515 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,515 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351979637] [2021-07-06 09:23:53,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351979637] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,516 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 09:23:53,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143040065] [2021-07-06 09:23:53,517 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 09:23:53,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 09:23:53,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,518 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,549 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-07-06 09:23:53,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:53,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-07-06 09:23:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,550 INFO L225 Difference]: With dead ends: 23 [2021-07-06 09:23:53,550 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,551 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,551 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-07-06 09:23:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,552 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,553 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,554 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,554 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-06 09:23:53,554 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,555 INFO L303 ceAbstractionStarter]: Result for error location mainErr2REQUIRES_VIOLATION was SAFE (3/10) [2021-07-06 09:23:53,555 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr3REQUIRES_VIOLATION ======== [2021-07-06 09:23:53,561 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,561 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-07-06 09:23:53,564 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,564 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,565 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr3REQUIRES_VIOLATION] === [2021-07-06 09:23:53,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1721933205, now seen corresponding path program 1 times [2021-07-06 09:23:53,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678159425] [2021-07-06 09:23:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,612 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,613 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,615 INFO L142 QuantifierPusher]: treesize reduction 7, result has 65.0 percent of original size [2021-07-06 09:23:53,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-07-06 09:23:53,622 INFO L142 QuantifierPusher]: treesize reduction 7, result has 56.3 percent of original size [2021-07-06 09:23:53,622 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,648 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,649 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678159425] [2021-07-06 09:23:53,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678159425] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:53,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263137520] [2021-07-06 09:23:53,651 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:53,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:53,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:53,653 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,689 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-07-06 09:23:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:53,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2021-07-06 09:23:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,689 INFO L225 Difference]: With dead ends: 23 [2021-07-06 09:23:53,690 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,690 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.0ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,691 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-07-06 09:23:53,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,691 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,692 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,692 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,692 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-06 09:23:53,692 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,692 INFO L303 ceAbstractionStarter]: Result for error location mainErr3REQUIRES_VIOLATION was SAFE (4/10) [2021-07-06 09:23:53,693 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr4REQUIRES_VIOLATION ======== [2021-07-06 09:23:53,700 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,700 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-06 09:23:53,703 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,703 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,704 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr4REQUIRES_VIOLATION] === [2021-07-06 09:23:53,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1840321842, now seen corresponding path program 1 times [2021-07-06 09:23:53,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,704 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707271726] [2021-07-06 09:23:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,731 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,732 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,755 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707271726] [2021-07-06 09:23:53,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707271726] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-07-06 09:23:53,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655808888] [2021-07-06 09:23:53,758 INFO L425 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-06 09:23:53,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-06 09:23:53,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,759 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,787 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2021-07-06 09:23:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:53,787 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-07-06 09:23:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,788 INFO L225 Difference]: With dead ends: 23 [2021-07-06 09:23:53,788 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,788 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-06 09:23:53,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,789 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-07-06 09:23:53,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,790 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,790 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,790 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,790 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,790 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-06 09:23:53,790 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,791 INFO L303 ceAbstractionStarter]: Result for error location mainErr4REQUIRES_VIOLATION was SAFE (5/10) [2021-07-06 09:23:53,792 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr5REQUIRES_VIOLATION ======== [2021-07-06 09:23:53,792 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,792 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-07-06 09:23:53,794 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,794 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,795 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr5REQUIRES_VIOLATION] === [2021-07-06 09:23:53,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1840321841, now seen corresponding path program 1 times [2021-07-06 09:23:53,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693209418] [2021-07-06 09:23:53,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,796 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,814 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,815 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,815 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:53,818 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,819 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-07-06 09:23:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,849 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,850 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693209418] [2021-07-06 09:23:53,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693209418] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,850 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-06 09:23:53,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589528116] [2021-07-06 09:23:53,852 INFO L425 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-07-06 09:23:53,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-07-06 09:23:53,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:53,853 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,879 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2021-07-06 09:23:53,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-06 09:23:53,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2021-07-06 09:23:53,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,880 INFO L225 Difference]: With dead ends: 24 [2021-07-06 09:23:53,880 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,880 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.4ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-07-06 09:23:53,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,881 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-07-06 09:23:53,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,881 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,881 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,881 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,881 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,882 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-06 09:23:53,882 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,882 INFO L303 ceAbstractionStarter]: Result for error location mainErr5REQUIRES_VIOLATION was SAFE (6/10) [2021-07-06 09:23:53,883 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr6ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:53,883 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,883 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-07-06 09:23:53,884 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,885 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,885 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr6ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:53,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1215402260, now seen corresponding path program 1 times [2021-07-06 09:23:53,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632680828] [2021-07-06 09:23:53,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,886 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,907 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,908 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,908 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,909 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:53,913 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,913 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-07-06 09:23:53,916 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,917 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-07-06 09:23:53,920 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,920 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:53,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:53,939 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:53,939 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:53,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:53,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632680828] [2021-07-06 09:23:53,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632680828] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:53,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:53,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:53,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672343475] [2021-07-06 09:23:53,940 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:53,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:53,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:53,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:53,942 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:53,981 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-07-06 09:23:53,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 09:23:53,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2021-07-06 09:23:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:53,982 INFO L225 Difference]: With dead ends: 25 [2021-07-06 09:23:53,982 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:53,982 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 09:23:53,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:53,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:53,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:53,983 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-07-06 09:23:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:53,983 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:53,983 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:53,983 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:53,984 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-06 09:23:53,984 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:53,984 INFO L303 ceAbstractionStarter]: Result for error location mainErr6ASSERT_VIOLATIONMEMORY_FREE was SAFE (7/10) [2021-07-06 09:23:53,985 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr7ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:53,985 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:53,985 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-07-06 09:23:53,986 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:53,986 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:53,986 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr7ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:53,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:53,987 INFO L82 PathProgramCache]: Analyzing trace with hash 977235662, now seen corresponding path program 1 times [2021-07-06 09:23:53,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:53,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741873857] [2021-07-06 09:23:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:53,988 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:54,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,002 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:54,002 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,003 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:54,005 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,005 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:54,008 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,008 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:54,015 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,015 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:54,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:54,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:54,039 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,039 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:54,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:54,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:54,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741873857] [2021-07-06 09:23:54,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741873857] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:54,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:54,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:54,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475647711] [2021-07-06 09:23:54,041 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:54,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:54,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:54,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:54,042 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:54,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:54,091 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-07-06 09:23:54,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 09:23:54,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-07-06 09:23:54,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:54,092 INFO L225 Difference]: With dead ends: 25 [2021-07-06 09:23:54,092 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:54,092 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 09:23:54,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:54,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:54,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:54,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-07-06 09:23:54,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:54,093 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:54,093 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:54,093 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:54,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:54,094 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-06 09:23:54,094 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:54,094 INFO L303 ceAbstractionStarter]: Result for error location mainErr7ASSERT_VIOLATIONMEMORY_FREE was SAFE (8/10) [2021-07-06 09:23:54,095 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr8ASSERT_VIOLATIONMEMORY_FREE ======== [2021-07-06 09:23:54,095 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:54,095 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:54,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-07-06 09:23:54,096 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:54,097 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:54,097 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr8ASSERT_VIOLATIONMEMORY_FREE] === [2021-07-06 09:23:54,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:54,097 INFO L82 PathProgramCache]: Analyzing trace with hash 229534510, now seen corresponding path program 1 times [2021-07-06 09:23:54,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:54,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733339443] [2021-07-06 09:23:54,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:54,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:54,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,109 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:54,109 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,110 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:54,114 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,115 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:54,117 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,118 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-07-06 09:23:54,120 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,121 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-07-06 09:23:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:54,143 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:54,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:54,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733339443] [2021-07-06 09:23:54,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733339443] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:54,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:54,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-07-06 09:23:54,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172243075] [2021-07-06 09:23:54,144 INFO L425 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-06 09:23:54,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:54,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-06 09:23:54,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-06 09:23:54,145 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:54,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:54,185 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-07-06 09:23:54,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-06 09:23:54,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-07-06 09:23:54,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:54,186 INFO L225 Difference]: With dead ends: 25 [2021-07-06 09:23:54,186 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:54,186 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-07-06 09:23:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:54,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:54,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:54,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-07-06 09:23:54,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:54,187 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:54,187 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:54,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:54,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:54,188 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-06 09:23:54,188 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:54,188 INFO L303 ceAbstractionStarter]: Result for error location mainErr8ASSERT_VIOLATIONMEMORY_FREE was SAFE (9/10) [2021-07-06 09:23:54,189 INFO L328 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == mainErr9ENSURES_VIOLATIONMEMORY_LEAK ======== [2021-07-06 09:23:54,189 INFO L329 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mLimitAnalysisTime=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-07-06 09:23:54,189 INFO L330 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-07-06 09:23:54,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-07-06 09:23:54,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-07-06 09:23:54,190 INFO L517 BasicCegarLoop]: Found error trace [2021-07-06 09:23:54,190 INFO L525 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-06 09:23:54,191 INFO L374 AbstractCegarLoop]: === Iteration 1 === [mainErr9ENSURES_VIOLATIONMEMORY_LEAK] === [2021-07-06 09:23:54,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-06 09:23:54,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1474364719, now seen corresponding path program 1 times [2021-07-06 09:23:54,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-06 09:23:54,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613289831] [2021-07-06 09:23:54,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-06 09:23:54,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-07-06 09:23:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:54,210 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,211 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:54,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,217 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:54,221 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-07-06 09:23:54,221 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-07-06 09:23:54,231 INFO L142 QuantifierPusher]: treesize reduction 26, result has 70.8 percent of original size [2021-07-06 09:23:54,239 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 63 [2021-07-06 09:23:54,250 INFO L142 QuantifierPusher]: treesize reduction 16, result has 72.9 percent of original size [2021-07-06 09:23:54,252 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-07-06 09:23:54,260 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,260 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-07-06 09:23:54,268 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,269 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-07-06 09:23:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-07-06 09:23:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-06 09:23:54,287 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-07-06 09:23:54,288 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-07-06 09:23:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-06 09:23:54,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-06 09:23:54,288 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613289831] [2021-07-06 09:23:54,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613289831] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-06 09:23:54,288 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-06 09:23:54,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-06 09:23:54,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042540986] [2021-07-06 09:23:54,289 INFO L425 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-06 09:23:54,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-06 09:23:54,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-06 09:23:54,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-06 09:23:54,290 INFO L87 Difference]: Start difference. First operand has 26 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 21 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:54,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-06 09:23:54,355 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-07-06 09:23:54,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-06 09:23:54,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-07-06 09:23:54,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-06 09:23:54,356 INFO L225 Difference]: With dead ends: 25 [2021-07-06 09:23:54,356 INFO L226 Difference]: Without dead ends: 0 [2021-07-06 09:23:54,356 INFO L795 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.3ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-07-06 09:23:54,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-06 09:23:54,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-06 09:23:54,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-06 09:23:54,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-06 09:23:54,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-07-06 09:23:54,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-06 09:23:54,357 INFO L442 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-06 09:23:54,357 INFO L443 AbstractCegarLoop]: Interpolant automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-07-06 09:23:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-06 09:23:54,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-06 09:23:54,358 WARN L471 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-06 09:23:54,358 WARN L182 nStatisticsGenerator]: total relevant statements: 0 [2021-07-06 09:23:54,358 INFO L303 ceAbstractionStarter]: Result for error location mainErr9ENSURES_VIOLATIONMEMORY_LEAK was SAFE (10/10) [2021-07-06 09:23:54,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.07 09:23:54 BoogieIcfgContainer [2021-07-06 09:23:54,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-06 09:23:54,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-07-06 09:23:54,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-07-06 09:23:54,365 INFO L275 PluginConnector]: Witness Printer initialized [2021-07-06 09:23:54,365 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.07 09:23:52" (3/4) ... [2021-07-06 09:23:54,367 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-07-06 09:23:54,372 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-07-06 09:23:54,373 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2021-07-06 09:23:54,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-07-06 09:23:54,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-07-06 09:23:54,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-07-06 09:23:54,377 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-07-06 09:23:54,397 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-07-06 09:23:54,397 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-07-06 09:23:54,398 INFO L168 Benchmark]: Toolchain (without parser) took 2200.69 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 55.0 MB in the beginning and 49.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:54,398 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 34.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-07-06 09:23:54,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.19 ms. Allocated memory is still 79.7 MB. Free memory was 54.8 MB in the beginning and 50.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:54,400 INFO L168 Benchmark]: Boogie Preprocessor took 26.85 ms. Allocated memory is still 79.7 MB. Free memory was 50.5 MB in the beginning and 48.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:54,400 INFO L168 Benchmark]: RCFGBuilder took 423.84 ms. Allocated memory is still 79.7 MB. Free memory was 48.0 MB in the beginning and 59.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:54,401 INFO L168 Benchmark]: TraceAbstraction took 1417.66 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 58.9 MB in the beginning and 53.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:54,401 INFO L168 Benchmark]: Witness Printer took 32.68 ms. Allocated memory is still 102.8 MB. Free memory was 53.1 MB in the beginning and 49.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-07-06 09:23:54,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 54.5 MB. Free memory was 34.6 MB in the beginning and 34.5 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 294.19 ms. Allocated memory is still 79.7 MB. Free memory was 54.8 MB in the beginning and 50.5 MB in the end (delta: 4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.85 ms. Allocated memory is still 79.7 MB. Free memory was 50.5 MB in the beginning and 48.2 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 423.84 ms. Allocated memory is still 79.7 MB. Free memory was 48.0 MB in the beginning and 59.4 MB in the end (delta: -11.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1417.66 ms. Allocated memory was 79.7 MB in the beginning and 102.8 MB in the end (delta: 23.1 MB). Free memory was 58.9 MB in the beginning and 53.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 28.4 MB. Max. memory is 16.1 GB. * Witness Printer took 32.68 ms. Allocated memory is still 102.8 MB. Free memory was 53.1 MB in the beginning and 49.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 533]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 534]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 535]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0REQUIRES_VIOLATION CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 307.5ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.4ms, AutomataDifference: 75.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 11 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 5.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.4ms SsaConstructionTime, 19.4ms SatisfiabilityAnalysisTime, 102.3ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 34 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr1REQUIRES_VIOLATION CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 150.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 44.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 11 SDslu, 12 SDs, 0 SdLazy, 27 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 27.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.6ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.1ms SsaConstructionTime, 24.6ms SatisfiabilityAnalysisTime, 61.8ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr2REQUIRES_VIOLATION CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 103.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.5ms, AutomataDifference: 33.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 10 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.0ms SsaConstructionTime, 11.2ms SatisfiabilityAnalysisTime, 32.2ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr3REQUIRES_VIOLATION CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 137.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.9ms, AutomataDifference: 38.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 11 SDslu, 20 SDs, 0 SdLazy, 29 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 23.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 23.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 2.7ms SsaConstructionTime, 17.4ms SatisfiabilityAnalysisTime, 60.0ms InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr4REQUIRES_VIOLATION CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 97.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.8ms, AutomataDifference: 30.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 9 SDslu, 10 SDs, 0 SdLazy, 30 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 9.7ms SatisfiabilityAnalysisTime, 37.4ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr5REQUIRES_VIOLATION CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 90.7ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.6ms, AutomataDifference: 28.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 22 SDslu, 12 SDs, 0 SdLazy, 29 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 27.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 3.3ms SatisfiabilityAnalysisTime, 47.6ms InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr6ASSERT_VIOLATIONMEMORY_FREE CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 101.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 41.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13 SDtfs, 27 SDslu, 28 SDs, 0 SdLazy, 44 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 20.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.8ms SsaConstructionTime, 3.7ms SatisfiabilityAnalysisTime, 45.0ms InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 59 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr7ASSERT_VIOLATIONMEMORY_FREE CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 109.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 51.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 26 SDslu, 25 SDs, 0 SdLazy, 48 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 26.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7ms SsaConstructionTime, 3.3ms SatisfiabilityAnalysisTime, 45.3ms InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 72 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr8ASSERT_VIOLATIONMEMORY_FREE CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 93.2ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 41.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 11 SDtfs, 23 SDslu, 23 SDs, 0 SdLazy, 54 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 2.7ms SatisfiabilityAnalysisTime, 40.0ms InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 77 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr9ENSURES_VIOLATIONMEMORY_LEAK CFG has 9 procedures, 44 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 168.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 0.7ms, AutomataDifference: 66.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 0.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 27 SDslu, 14 SDs, 0 SdLazy, 63 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 64.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 0.5ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8ms SsaConstructionTime, 5.7ms SatisfiabilityAnalysisTime, 87.5ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 154 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-07-06 09:23:54,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...