./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 54858612 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/array-memsafety/openbsd_cmemrchr-alloca-2.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 b2f3c0ded3a6ea37e981661d4b4066d384875e4d ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 03:26:00,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:26:00,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:26:00,540 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:26:00,540 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:26:00,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:26:00,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:26:00,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:26:00,561 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:26:00,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:26:00,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:26:00,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:26:00,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:26:00,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:26:00,582 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:26:00,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:26:00,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:26:00,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:26:00,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:26:00,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:26:00,604 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:26:00,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:26:00,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:26:00,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:26:00,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:26:00,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:26:00,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:26:00,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:26:00,624 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:26:00,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:26:00,626 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:26:00,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:26:00,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:26:00,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:26:00,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:26:00,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:26:00,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:26:00,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:26:00,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:26:00,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:26:00,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:26:00,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-26 03:26:00,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:26:00,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:26:00,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:26:00,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:26:00,708 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:26:00,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:26:00,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:26:00,709 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:26:00,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:26:00,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:26:00,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:26:00,711 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:26:00,712 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:26:00,712 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-26 03:26:00,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:26:00,712 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:26:00,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:26:00,713 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:26:00,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:26:00,714 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:26:00,714 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:26:00,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:26:00,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:26:00,715 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:26:00,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:26:00,716 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:26:00,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:26:00,716 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:26:00,717 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2f3c0ded3a6ea37e981661d4b4066d384875e4d [2020-10-26 03:26:01,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:26:01,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:26:01,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:26:01,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:26:01,241 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:26:01,243 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2020-10-26 03:26:01,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f3354e2/e74b96807121488990d5c307326e9a8b/FLAGd0b81cf8d [2020-10-26 03:26:02,081 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:26:02,082 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemrchr-alloca-2.i [2020-10-26 03:26:02,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f3354e2/e74b96807121488990d5c307326e9a8b/FLAGd0b81cf8d [2020-10-26 03:26:02,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89f3354e2/e74b96807121488990d5c307326e9a8b [2020-10-26 03:26:02,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:26:02,322 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:26:02,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:26:02,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:26:02,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:26:02,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:26:02" (1/1) ... [2020-10-26 03:26:02,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@723f2243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:02, skipping insertion in model container [2020-10-26 03:26:02,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:26:02" (1/1) ... [2020-10-26 03:26:02,350 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:26:02,417 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:26:02,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:26:02,834 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:26:02,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:26:03,030 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:26:03,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03 WrapperNode [2020-10-26 03:26:03,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:26:03,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:26:03,033 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:26:03,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:26:03,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,132 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... [2020-10-26 03:26:03,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:26:03,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:26:03,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:26:03,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:26:03,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:26:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:26:03,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:26:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:26:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:26:03,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:26:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:26:03,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:26:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure cmemrchr [2020-10-26 03:26:03,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:26:03,262 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:26:03,263 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:26:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:26:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:26:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:26:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:26:03,264 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:26:03,265 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:26:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:26:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:26:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:26:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:26:03,266 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:26:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:26:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:26:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:26:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:26:03,267 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:26:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:26:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:26:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:26:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:26:03,268 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:26:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:26:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:26:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:26:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:26:03,269 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:26:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:26:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:26:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:26:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:26:03,270 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:26:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:26:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:26:03,271 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:26:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:26:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:26:03,272 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:26:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:26:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:26:03,273 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:26:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:26:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:26:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:26:03,274 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:26:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:26:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:26:03,275 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:26:03,276 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:26:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:26:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:26:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:26:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:26:03,277 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:26:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:26:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:26:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:26:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:26:03,278 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:26:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:26:03,279 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:26:03,280 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:26:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:26:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:26:03,282 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:26:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:26:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:26:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:26:03,283 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:26:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:26:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:26:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:26:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:26:03,284 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:26:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:26:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:26:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:26:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:26:03,285 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:26:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:26:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:26:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:26:03,286 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:26:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:26:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:26:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:26:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:26:03,287 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:26:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:26:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:26:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:26:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:26:03,288 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:26:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:26:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:26:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:26:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:26:03,289 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:26:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:26:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:26:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:26:03,290 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:26:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:26:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:26:03,291 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:26:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:26:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:26:03,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-26 03:26:03,293 INFO L130 BoogieDeclarations]: Found specification of procedure cmemrchr [2020-10-26 03:26:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:26:03,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:26:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:26:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:26:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:26:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:26:03,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:26:04,116 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:26:04,116 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-26 03:26:04,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:26:04 BoogieIcfgContainer [2020-10-26 03:26:04,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:26:04,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:26:04,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:26:04,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:26:04,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:26:02" (1/3) ... [2020-10-26 03:26:04,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b490144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:26:04, skipping insertion in model container [2020-10-26 03:26:04,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:26:03" (2/3) ... [2020-10-26 03:26:04,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b490144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:26:04, skipping insertion in model container [2020-10-26 03:26:04,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:26:04" (3/3) ... [2020-10-26 03:26:04,128 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemrchr-alloca-2.i [2020-10-26 03:26:04,141 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:26:04,147 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-10-26 03:26:04,162 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-26 03:26:04,187 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:26:04,187 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:26:04,187 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:26:04,187 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:26:04,188 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:26:04,188 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:26:04,188 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:26:04,188 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:26:04,204 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-26 03:26:04,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:26:04,214 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:04,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:04,215 INFO L429 AbstractCegarLoop]: === Iteration 1 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:04,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:04,222 INFO L82 PathProgramCache]: Analyzing trace with hash -840380262, now seen corresponding path program 1 times [2020-10-26 03:26:04,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:04,234 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464034834] [2020-10-26 03:26:04,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:04,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:04,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:04,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464034834] [2020-10-26 03:26:04,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:26:04,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:26:04,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080714058] [2020-10-26 03:26:04,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:26:04,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:04,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:26:04,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:26:04,498 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-26 03:26:04,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:04,641 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-26 03:26:04,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:26:04,643 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-26 03:26:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:04,659 INFO L225 Difference]: With dead ends: 33 [2020-10-26 03:26:04,660 INFO L226 Difference]: Without dead ends: 30 [2020-10-26 03:26:04,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:26:04,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-26 03:26:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-26 03:26:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 03:26:04,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-26 03:26:04,711 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 11 [2020-10-26 03:26:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:04,712 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-26 03:26:04,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:26:04,713 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-26 03:26:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:26:04,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:04,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:04,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:26:04,714 INFO L429 AbstractCegarLoop]: === Iteration 2 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:04,715 INFO L82 PathProgramCache]: Analyzing trace with hash -840380261, now seen corresponding path program 1 times [2020-10-26 03:26:04,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:04,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431830222] [2020-10-26 03:26:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:04,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:04,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431830222] [2020-10-26 03:26:04,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:26:04,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:26:04,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218672262] [2020-10-26 03:26:04,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:26:04,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:04,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:26:04,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:26:04,839 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-10-26 03:26:05,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:05,007 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-10-26 03:26:05,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:26:05,008 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:26:05,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:05,009 INFO L225 Difference]: With dead ends: 34 [2020-10-26 03:26:05,009 INFO L226 Difference]: Without dead ends: 34 [2020-10-26 03:26:05,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:26:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-26 03:26:05,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-26 03:26:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-26 03:26:05,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2020-10-26 03:26:05,016 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2020-10-26 03:26:05,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:05,017 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2020-10-26 03:26:05,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:26:05,017 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2020-10-26 03:26:05,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 03:26:05,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:05,018 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:05,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:26:05,018 INFO L429 AbstractCegarLoop]: === Iteration 3 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:05,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:05,019 INFO L82 PathProgramCache]: Analyzing trace with hash 361396958, now seen corresponding path program 1 times [2020-10-26 03:26:05,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:05,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145400983] [2020-10-26 03:26:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:05,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:05,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:05,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145400983] [2020-10-26 03:26:05,162 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458605353] [2020-10-26 03:26:05,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:05,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:26:05,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:05,518 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:26:05,519 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:05,554 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:05,555 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:05,555 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-26 03:26:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:05,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:05,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2020-10-26 03:26:05,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278404786] [2020-10-26 03:26:05,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:26:05,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:05,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:26:05,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:26:05,609 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand 7 states. [2020-10-26 03:26:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:05,779 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2020-10-26 03:26:05,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:26:05,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-26 03:26:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:05,781 INFO L225 Difference]: With dead ends: 33 [2020-10-26 03:26:05,781 INFO L226 Difference]: Without dead ends: 33 [2020-10-26 03:26:05,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:26:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-26 03:26:05,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-26 03:26:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-26 03:26:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-26 03:26:05,788 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 15 [2020-10-26 03:26:05,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:05,788 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-26 03:26:05,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:26:05,788 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-26 03:26:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:26:05,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:05,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:06,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-26 03:26:06,004 INFO L429 AbstractCegarLoop]: === Iteration 4 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:06,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:06,005 INFO L82 PathProgramCache]: Analyzing trace with hash 25874007, now seen corresponding path program 1 times [2020-10-26 03:26:06,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:06,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131259381] [2020-10-26 03:26:06,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:06,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:06,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131259381] [2020-10-26 03:26:06,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:26:06,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:26:06,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747544679] [2020-10-26 03:26:06,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 03:26:06,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:06,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 03:26:06,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:26:06,189 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2020-10-26 03:26:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:06,470 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-26 03:26:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:26:06,471 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-26 03:26:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:06,475 INFO L225 Difference]: With dead ends: 32 [2020-10-26 03:26:06,475 INFO L226 Difference]: Without dead ends: 32 [2020-10-26 03:26:06,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:26:06,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-26 03:26:06,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-10-26 03:26:06,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 03:26:06,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2020-10-26 03:26:06,490 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 19 [2020-10-26 03:26:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:06,491 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2020-10-26 03:26:06,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 03:26:06,491 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2020-10-26 03:26:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:26:06,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:06,493 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:06,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:26:06,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:06,495 INFO L82 PathProgramCache]: Analyzing trace with hash 25874008, now seen corresponding path program 1 times [2020-10-26 03:26:06,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:06,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003968295] [2020-10-26 03:26:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:06,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:06,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003968295] [2020-10-26 03:26:06,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200088694] [2020-10-26 03:26:06,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-26 03:26:07,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:07,134 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:26:07,134 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:07,147 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:07,147 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:07,147 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-26 03:26:07,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 03:26:07,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 03:26:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 18 [2020-10-26 03:26:07,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15095869] [2020-10-26 03:26:07,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 03:26:07,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 03:26:07,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2020-10-26 03:26:07,373 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand 9 states. [2020-10-26 03:26:07,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:07,605 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-10-26 03:26:07,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:26:07,605 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2020-10-26 03:26:07,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:07,607 INFO L225 Difference]: With dead ends: 35 [2020-10-26 03:26:07,607 INFO L226 Difference]: Without dead ends: 35 [2020-10-26 03:26:07,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-26 03:26:07,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-26 03:26:07,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-10-26 03:26:07,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-26 03:26:07,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-10-26 03:26:07,613 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-10-26 03:26:07,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:07,613 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-10-26 03:26:07,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 03:26:07,613 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-10-26 03:26:07,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 03:26:07,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:07,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:07,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:07,827 INFO L429 AbstractCegarLoop]: === Iteration 6 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:07,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:07,828 INFO L82 PathProgramCache]: Analyzing trace with hash 2125510050, now seen corresponding path program 1 times [2020-10-26 03:26:07,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:07,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992175110] [2020-10-26 03:26:07,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:08,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:08,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992175110] [2020-10-26 03:26:08,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300472895] [2020-10-26 03:26:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:08,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 03:26:08,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:08,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:08,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:08,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 12 [2020-10-26 03:26:08,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738145305] [2020-10-26 03:26:08,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 03:26:08,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:08,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 03:26:08,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:26:08,235 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-10-26 03:26:08,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:08,647 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-26 03:26:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 03:26:08,647 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2020-10-26 03:26:08,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:08,649 INFO L225 Difference]: With dead ends: 63 [2020-10-26 03:26:08,649 INFO L226 Difference]: Without dead ends: 63 [2020-10-26 03:26:08,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-10-26 03:26:08,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-26 03:26:08,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 52. [2020-10-26 03:26:08,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 03:26:08,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 59 transitions. [2020-10-26 03:26:08,659 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 59 transitions. Word has length 24 [2020-10-26 03:26:08,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:08,660 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 59 transitions. [2020-10-26 03:26:08,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 03:26:08,660 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 59 transitions. [2020-10-26 03:26:08,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 03:26:08,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:08,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:08,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:08,877 INFO L429 AbstractCegarLoop]: === Iteration 7 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:08,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:08,878 INFO L82 PathProgramCache]: Analyzing trace with hash 2125031501, now seen corresponding path program 1 times [2020-10-26 03:26:08,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:08,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441405556] [2020-10-26 03:26:08,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:08,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-26 03:26:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:09,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 03:26:09,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441405556] [2020-10-26 03:26:09,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:26:09,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:26:09,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854408319] [2020-10-26 03:26:09,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:26:09,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:09,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:26:09,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:26:09,024 INFO L87 Difference]: Start difference. First operand 52 states and 59 transitions. Second operand 5 states. [2020-10-26 03:26:09,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:09,132 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-10-26 03:26:09,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:26:09,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-26 03:26:09,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:09,134 INFO L225 Difference]: With dead ends: 51 [2020-10-26 03:26:09,134 INFO L226 Difference]: Without dead ends: 29 [2020-10-26 03:26:09,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:26:09,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-26 03:26:09,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-26 03:26:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-26 03:26:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-10-26 03:26:09,145 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 24 [2020-10-26 03:26:09,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:09,146 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-10-26 03:26:09,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:26:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-10-26 03:26:09,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-26 03:26:09,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:09,147 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:09,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:26:09,150 INFO L429 AbstractCegarLoop]: === Iteration 8 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:09,151 INFO L82 PathProgramCache]: Analyzing trace with hash -912322497, now seen corresponding path program 2 times [2020-10-26 03:26:09,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:09,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355138468] [2020-10-26 03:26:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:09,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:09,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:09,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355138468] [2020-10-26 03:26:09,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317865876] [2020-10-26 03:26:09,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:09,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:26:09,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:09,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-26 03:26:09,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:09,786 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:26:09,787 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:09,797 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:09,798 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:09,798 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-10-26 03:26:10,170 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:10,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:10,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2020-10-26 03:26:10,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669880257] [2020-10-26 03:26:10,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 03:26:10,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:10,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 03:26:10,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:26:10,173 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 24 states. [2020-10-26 03:26:10,940 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-26 03:26:11,142 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-10-26 03:26:11,757 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-26 03:26:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:12,137 INFO L93 Difference]: Finished difference Result 59 states and 62 transitions. [2020-10-26 03:26:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 03:26:12,137 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 28 [2020-10-26 03:26:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:12,139 INFO L225 Difference]: With dead ends: 59 [2020-10-26 03:26:12,139 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 03:26:12,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=268, Invalid=1802, Unknown=0, NotChecked=0, Total=2070 [2020-10-26 03:26:12,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 03:26:12,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34. [2020-10-26 03:26:12,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-26 03:26:12,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-26 03:26:12,145 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2020-10-26 03:26:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:12,146 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-26 03:26:12,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 03:26:12,146 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-26 03:26:12,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-26 03:26:12,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:12,147 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:12,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:12,356 INFO L429 AbstractCegarLoop]: === Iteration 9 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:12,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:12,357 INFO L82 PathProgramCache]: Analyzing trace with hash 407669787, now seen corresponding path program 3 times [2020-10-26 03:26:12,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:12,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584968524] [2020-10-26 03:26:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:12,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:12,626 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:12,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584968524] [2020-10-26 03:26:12,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435957560] [2020-10-26 03:26:12,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:12,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-26 03:26:12,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:12,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-26 03:26:12,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:12,774 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:26:12,774 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:12,779 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:12,779 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:12,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-10-26 03:26:13,073 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-26 03:26:13,074 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:13,082 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:13,083 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:13,083 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:9 [2020-10-26 03:26:13,261 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:13,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:13,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 15] total 24 [2020-10-26 03:26:13,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376936227] [2020-10-26 03:26:13,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-26 03:26:13,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:13,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-26 03:26:13,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=502, Unknown=0, NotChecked=0, Total=552 [2020-10-26 03:26:13,265 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 24 states. [2020-10-26 03:26:14,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:14,403 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-26 03:26:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 03:26:14,403 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 33 [2020-10-26 03:26:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:14,405 INFO L225 Difference]: With dead ends: 54 [2020-10-26 03:26:14,405 INFO L226 Difference]: Without dead ends: 41 [2020-10-26 03:26:14,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=182, Invalid=1300, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 03:26:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-26 03:26:14,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-26 03:26:14,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-26 03:26:14,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-26 03:26:14,411 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 33 [2020-10-26 03:26:14,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:14,411 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-26 03:26:14,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-26 03:26:14,411 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-26 03:26:14,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-26 03:26:14,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:14,412 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:14,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:14,625 INFO L429 AbstractCegarLoop]: === Iteration 10 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:14,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:14,626 INFO L82 PathProgramCache]: Analyzing trace with hash -605171170, now seen corresponding path program 4 times [2020-10-26 03:26:14,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:14,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422258304] [2020-10-26 03:26:14,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:15,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:15,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422258304] [2020-10-26 03:26:15,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252957201] [2020-10-26 03:26:15,093 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:15,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 03:26:15,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:15,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-26 03:26:15,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:15,576 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 03:26:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:15,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:15,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 29 [2020-10-26 03:26:15,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910860689] [2020-10-26 03:26:15,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-26 03:26:15,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:15,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-26 03:26:15,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-10-26 03:26:15,969 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 30 states. [2020-10-26 03:26:18,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:18,236 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2020-10-26 03:26:18,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 03:26:18,237 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 37 [2020-10-26 03:26:18,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:18,238 INFO L225 Difference]: With dead ends: 73 [2020-10-26 03:26:18,238 INFO L226 Difference]: Without dead ends: 73 [2020-10-26 03:26:18,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=389, Invalid=3033, Unknown=0, NotChecked=0, Total=3422 [2020-10-26 03:26:18,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-26 03:26:18,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 43. [2020-10-26 03:26:18,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 03:26:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions. [2020-10-26 03:26:18,250 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 37 [2020-10-26 03:26:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:18,251 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 45 transitions. [2020-10-26 03:26:18,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-26 03:26:18,255 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions. [2020-10-26 03:26:18,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-26 03:26:18,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:18,257 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:18,472 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:18,473 INFO L429 AbstractCegarLoop]: === Iteration 11 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash 446111132, now seen corresponding path program 5 times [2020-10-26 03:26:18,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:18,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892886337] [2020-10-26 03:26:18,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:18,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:18,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:18,786 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:18,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892886337] [2020-10-26 03:26:18,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750620756] [2020-10-26 03:26:18,787 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:18,932 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-26 03:26:18,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:18,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-26 03:26:18,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:19,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:19,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 16 [2020-10-26 03:26:19,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46586923] [2020-10-26 03:26:19,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-26 03:26:19,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:19,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-26 03:26:19,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-26 03:26:19,033 INFO L87 Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 16 states. [2020-10-26 03:26:19,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:19,569 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-26 03:26:19,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 03:26:19,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-26 03:26:19,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:19,574 INFO L225 Difference]: With dead ends: 68 [2020-10-26 03:26:19,574 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 03:26:19,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-10-26 03:26:19,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 03:26:19,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-10-26 03:26:19,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 03:26:19,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2020-10-26 03:26:19,582 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 42 [2020-10-26 03:26:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:19,582 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2020-10-26 03:26:19,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-26 03:26:19,582 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2020-10-26 03:26:19,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-26 03:26:19,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:19,583 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:19,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:19,785 INFO L429 AbstractCegarLoop]: === Iteration 12 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:19,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:19,786 INFO L82 PathProgramCache]: Analyzing trace with hash -840897799, now seen corresponding path program 6 times [2020-10-26 03:26:19,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:19,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784403680] [2020-10-26 03:26:19,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:19,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:20,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:20,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784403680] [2020-10-26 03:26:20,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981194340] [2020-10-26 03:26:20,348 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:20,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-10-26 03:26:20,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:20,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 58 conjunts are in the unsatisfiable core [2020-10-26 03:26:20,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:20,581 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:26:20,581 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:20,590 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:20,591 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:20,591 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:18 [2020-10-26 03:26:21,128 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 03:26:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:21,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:21,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 21] total 38 [2020-10-26 03:26:21,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781560868] [2020-10-26 03:26:21,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-26 03:26:21,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:21,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-26 03:26:21,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1381, Unknown=0, NotChecked=0, Total=1482 [2020-10-26 03:26:21,853 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand 39 states. [2020-10-26 03:26:23,352 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-10-26 03:26:23,567 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-10-26 03:26:23,902 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-26 03:26:24,136 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-26 03:26:24,357 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 37 [2020-10-26 03:26:24,602 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 50 [2020-10-26 03:26:24,986 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-10-26 03:26:25,207 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-26 03:26:25,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:25,773 INFO L93 Difference]: Finished difference Result 81 states and 84 transitions. [2020-10-26 03:26:25,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 03:26:25,774 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 46 [2020-10-26 03:26:25,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:25,775 INFO L225 Difference]: With dead ends: 81 [2020-10-26 03:26:25,775 INFO L226 Difference]: Without dead ends: 81 [2020-10-26 03:26:25,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=307, Invalid=3475, Unknown=0, NotChecked=0, Total=3782 [2020-10-26 03:26:25,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-26 03:26:25,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 59. [2020-10-26 03:26:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 03:26:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 62 transitions. [2020-10-26 03:26:25,782 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 62 transitions. Word has length 46 [2020-10-26 03:26:25,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:25,785 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 62 transitions. [2020-10-26 03:26:25,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-26 03:26:25,785 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 62 transitions. [2020-10-26 03:26:25,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 03:26:25,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:25,787 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:26,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-26 03:26:26,001 INFO L429 AbstractCegarLoop]: === Iteration 13 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:26,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:26,002 INFO L82 PathProgramCache]: Analyzing trace with hash 43696598, now seen corresponding path program 7 times [2020-10-26 03:26:26,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:26,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914780197] [2020-10-26 03:26:26,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:26,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:26,597 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:26,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914780197] [2020-10-26 03:26:26,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272812585] [2020-10-26 03:26:26,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:26,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 48 conjunts are in the unsatisfiable core [2020-10-26 03:26:26,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:26,795 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-26 03:26:26,796 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-26 03:26:26,806 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-26 03:26:26,807 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-26 03:26:26,807 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2020-10-26 03:26:27,218 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 03:26:27,675 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:27,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:27,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16] total 34 [2020-10-26 03:26:27,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631506770] [2020-10-26 03:26:27,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-26 03:26:27,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:27,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-26 03:26:27,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=1096, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 03:26:27,678 INFO L87 Difference]: Start difference. First operand 59 states and 62 transitions. Second operand 35 states. [2020-10-26 03:26:29,123 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 42 [2020-10-26 03:26:29,354 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 48 [2020-10-26 03:26:29,550 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-10-26 03:26:29,777 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 45 [2020-10-26 03:26:30,446 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-10-26 03:26:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:31,402 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-10-26 03:26:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-26 03:26:31,403 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 50 [2020-10-26 03:26:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:31,405 INFO L225 Difference]: With dead ends: 117 [2020-10-26 03:26:31,405 INFO L226 Difference]: Without dead ends: 117 [2020-10-26 03:26:31,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=385, Invalid=3775, Unknown=0, NotChecked=0, Total=4160 [2020-10-26 03:26:31,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-26 03:26:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 52. [2020-10-26 03:26:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 03:26:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 54 transitions. [2020-10-26 03:26:31,412 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 54 transitions. Word has length 50 [2020-10-26 03:26:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:31,413 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 54 transitions. [2020-10-26 03:26:31,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-26 03:26:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 54 transitions. [2020-10-26 03:26:31,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-26 03:26:31,414 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:31,414 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:31,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:31,618 INFO L429 AbstractCegarLoop]: === Iteration 14 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:31,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:31,619 INFO L82 PathProgramCache]: Analyzing trace with hash -762817119, now seen corresponding path program 8 times [2020-10-26 03:26:31,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:31,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813859640] [2020-10-26 03:26:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:31,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:31,936 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:31,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813859640] [2020-10-26 03:26:31,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497063648] [2020-10-26 03:26:31,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:32,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 03:26:32,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:32,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-26 03:26:32,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:32,193 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 8 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:32,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:32,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 18 [2020-10-26 03:26:32,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259695768] [2020-10-26 03:26:32,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 03:26:32,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:32,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 03:26:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-26 03:26:32,200 INFO L87 Difference]: Start difference. First operand 52 states and 54 transitions. Second operand 18 states. [2020-10-26 03:26:32,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:32,920 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-26 03:26:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 03:26:32,920 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 51 [2020-10-26 03:26:32,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:32,922 INFO L225 Difference]: With dead ends: 82 [2020-10-26 03:26:32,922 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 03:26:32,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2020-10-26 03:26:32,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 03:26:32,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-26 03:26:32,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-26 03:26:32,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2020-10-26 03:26:32,933 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 51 [2020-10-26 03:26:32,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:32,933 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2020-10-26 03:26:32,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 03:26:32,933 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2020-10-26 03:26:32,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-26 03:26:32,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:26:32,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:26:33,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:33,141 INFO L429 AbstractCegarLoop]: === Iteration 15 === [cmemrchrErr1REQUIRES_VIOLATION, cmemrchrErr0REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION]=== [2020-10-26 03:26:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:26:33,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1336099044, now seen corresponding path program 9 times [2020-10-26 03:26:33,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:26:33,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069682749] [2020-10-26 03:26:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:26:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:33,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:26:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:26:33,846 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:26:33,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069682749] [2020-10-26 03:26:33,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293181533] [2020-10-26 03:26:33,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 03:26:34,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-26 03:26:34,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 03:26:34,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 53 conjunts are in the unsatisfiable core [2020-10-26 03:26:34,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 03:26:35,739 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 23 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-26 03:26:35,739 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 03:26:35,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 39 [2020-10-26 03:26:35,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800412794] [2020-10-26 03:26:35,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-26 03:26:35,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:26:35,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-26 03:26:35,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1464, Unknown=0, NotChecked=0, Total=1560 [2020-10-26 03:26:35,744 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 40 states. [2020-10-26 03:26:38,110 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2020-10-26 03:26:40,090 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 40 [2020-10-26 03:26:40,515 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2020-10-26 03:26:40,831 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2020-10-26 03:26:41,333 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 74 [2020-10-26 03:26:41,652 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2020-10-26 03:26:42,178 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 72 [2020-10-26 03:26:42,937 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-26 03:26:43,168 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-26 03:26:43,462 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2020-10-26 03:26:43,750 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 60 [2020-10-26 03:26:44,091 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-26 03:26:46,442 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2020-10-26 03:26:46,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:26:46,633 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2020-10-26 03:26:46,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-26 03:26:46,634 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 55 [2020-10-26 03:26:46,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:26:46,635 INFO L225 Difference]: With dead ends: 95 [2020-10-26 03:26:46,635 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 03:26:46,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1535 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=693, Invalid=7317, Unknown=0, NotChecked=0, Total=8010 [2020-10-26 03:26:46,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 03:26:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 03:26:46,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 03:26:46,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 03:26:46,639 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-10-26 03:26:46,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:26:46,639 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 03:26:46,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-26 03:26:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 03:26:46,640 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 03:26:46,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-26 03:26:46,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:26:46 BoogieIcfgContainer [2020-10-26 03:26:46,852 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:26:46,852 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:26:46,852 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:26:46,853 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:26:46,853 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:26:04" (3/4) ... [2020-10-26 03:26:46,856 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 03:26:46,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-26 03:26:46,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cmemrchr [2020-10-26 03:26:46,862 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_32 [2020-10-26 03:26:46,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __bswap_64 [2020-10-26 03:26:46,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint16_identity [2020-10-26 03:26:46,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint64_identity [2020-10-26 03:26:46,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-26 03:26:46,863 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __uint32_identity [2020-10-26 03:26:46,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-10-26 03:26:46,867 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-26 03:26:46,868 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 03:26:46,920 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:26:46,921 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:26:46,923 INFO L168 Benchmark]: Toolchain (without parser) took 44620.77 ms. Allocated memory was 37.7 MB in the beginning and 176.2 MB in the end (delta: 138.4 MB). Free memory was 22.9 MB in the beginning and 75.0 MB in the end (delta: -52.1 MB). Peak memory consumption was 84.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:26:46,924 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 37.7 MB. Free memory was 22.6 MB in the beginning and 22.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:26:46,925 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.20 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 22.3 MB in the beginning and 29.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2020-10-26 03:26:46,926 INFO L168 Benchmark]: Boogie Preprocessor took 119.51 ms. Allocated memory is still 46.1 MB. Free memory was 29.2 MB in the beginning and 26.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:26:46,927 INFO L168 Benchmark]: RCFGBuilder took 961.64 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 31.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:26:46,930 INFO L168 Benchmark]: TraceAbstraction took 42731.93 ms. Allocated memory was 56.6 MB in the beginning and 176.2 MB in the end (delta: 119.5 MB). Free memory was 31.1 MB in the beginning and 77.8 MB in the end (delta: -46.7 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:26:46,930 INFO L168 Benchmark]: Witness Printer took 68.64 ms. Allocated memory is still 176.2 MB. Free memory was 77.8 MB in the beginning and 75.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:26:46,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 37.7 MB. Free memory was 22.6 MB in the beginning and 22.6 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.20 ms. Allocated memory was 37.7 MB in the beginning and 46.1 MB in the end (delta: 8.4 MB). Free memory was 22.3 MB in the beginning and 29.2 MB in the end (delta: -7.0 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.51 ms. Allocated memory is still 46.1 MB. Free memory was 29.2 MB in the beginning and 26.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 961.64 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 26.8 MB in the beginning and 31.4 MB in the end (delta: -4.6 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 42731.93 ms. Allocated memory was 56.6 MB in the beginning and 176.2 MB in the end (delta: 119.5 MB). Free memory was 31.1 MB in the beginning and 77.8 MB in the end (delta: -46.7 MB). Peak memory consumption was 73.0 MB. Max. memory is 16.1 GB. * Witness Printer took 68.64 ms. Allocated memory is still 176.2 MB. Free memory was 77.8 MB in the beginning and 75.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 520]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 527]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 541]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 42.6s, OverallIterations: 15, TraceHistogramMax: 5, AutomataDifference: 26.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 321 SDtfs, 1130 SDslu, 1522 SDs, 0 SdLazy, 7087 SolverSat, 365 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 784 GetRequests, 322 SyntacticMatches, 6 SemanticMatches, 456 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4520 ImplicationChecksByTransitivity, 27.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 174 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 865 NumberOfCodeBlocks, 861 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 839 ConstructedInterpolants, 2 QuantifiedInterpolants, 347426 SizeOfPredicates, 75 NumberOfNonLiveVariables, 1839 ConjunctsInSsa, 365 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 130/708 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...