./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/sll-token-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/forester-heap/sll-token-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 95135695b4ab9cb9c416390540cae35b9fbb32e4 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:19:05,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:19:05,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:19:05,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:19:05,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:19:05,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:19:05,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:19:05,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:19:05,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:19:05,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:19:05,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:19:05,081 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:19:05,082 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:19:05,084 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:19:05,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:19:05,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:19:05,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:19:05,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:19:05,094 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:19:05,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:19:05,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:19:05,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:19:05,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:19:05,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:19:05,115 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:19:05,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:19:05,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:19:05,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:19:05,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:19:05,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:19:05,118 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:19:05,119 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:19:05,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:19:05,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:19:05,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:19:05,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:19:05,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:19:05,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:19:05,123 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:19:05,124 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:19:05,125 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:19:05,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:19:05,147 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:19:05,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:19:05,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:19:05,149 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:19:05,149 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:19:05,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:19:05,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:19:05,150 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:19:05,150 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:19:05,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:19:05,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:19:05,151 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:19:05,151 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:19:05,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:19:05,152 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:19:05,152 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:19:05,152 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:19:05,153 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:19:05,153 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:19:05,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:19:05,154 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:19:05,154 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:05,154 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:19:05,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:19:05,155 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:19:05,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:19:05,155 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:19:05,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /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-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95135695b4ab9cb9c416390540cae35b9fbb32e4 [2020-10-20 06:19:05,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:19:05,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:19:05,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:19:05,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:19:05,372 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:19:05,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/sll-token-1.i [2020-10-20 06:19:05,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c94e8f5/7f96cf69ba0043fba6d8714aa941a069/FLAG05335b38c [2020-10-20 06:19:05,989 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:19:05,990 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/sll-token-1.i [2020-10-20 06:19:06,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c94e8f5/7f96cf69ba0043fba6d8714aa941a069/FLAG05335b38c [2020-10-20 06:19:06,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86c94e8f5/7f96cf69ba0043fba6d8714aa941a069 [2020-10-20 06:19:06,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:19:06,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:19:06,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:06,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:19:06,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:19:06,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3813f748 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06, skipping insertion in model container [2020-10-20 06:19:06,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:19:06,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:06,727 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:06,737 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:19:06,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:06,850 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:19:06,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06 WrapperNode [2020-10-20 06:19:06,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:06,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:19:06,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:19:06,853 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:19:06,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,883 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (1/1) ... [2020-10-20 06:19:06,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:19:06,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:19:06,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:19:06,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:19:06,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (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 [2020-10-20 06:19:06,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:19:06,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:19:06,988 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:19:06,988 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:19:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:19:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:19:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:19:06,989 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:19:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:19:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:19:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:19:06,990 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:19:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:19:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:19:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:19:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:19:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:19:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:19:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:19:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:19:06,992 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:19:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:19:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:19:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:19:06,993 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:19:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:19:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:19:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:19:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:19:06,994 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:19:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:19:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:19:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:19:06,995 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:19:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:19:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:19:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:19:06,996 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:19:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:19:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:19:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:19:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:19:06,997 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:19:06,998 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:19:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:19:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:19:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:19:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:19:06,999 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:19:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:19:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:19:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:19:07,000 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:19:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:19:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:19:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-20 06:19:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:19:07,001 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:19:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:19:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:19:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:19:07,002 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:19:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:19:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:19:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:19:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:19:07,003 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:19:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:19:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:19:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:19:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:19:07,004 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:19:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:19:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:19:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:19:07,005 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:19:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:19:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:19:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:19:07,006 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:19:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:19:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:19:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:19:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:19:07,007 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:19:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:19:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:19:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:19:07,008 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:19:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:19:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:19:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:19:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:19:07,009 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:19:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:19:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:19:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:19:07,010 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:19:07,011 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:19:07,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:19:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:19:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:19:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:19:07,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:19:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:19:07,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:19:07,754 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:19:07,754 INFO L298 CfgBuilder]: Removed 15 assume(true) statements. [2020-10-20 06:19:07,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:07 BoogieIcfgContainer [2020-10-20 06:19:07,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:19:07,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:19:07,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:19:07,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:19:07,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:19:06" (1/3) ... [2020-10-20 06:19:07,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3671a9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:07, skipping insertion in model container [2020-10-20 06:19:07,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:06" (2/3) ... [2020-10-20 06:19:07,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3671a9ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:07, skipping insertion in model container [2020-10-20 06:19:07,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:07" (3/3) ... [2020-10-20 06:19:07,766 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-token-1.i [2020-10-20 06:19:07,777 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:19:07,785 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 49 error locations. [2020-10-20 06:19:07,795 INFO L253 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2020-10-20 06:19:07,813 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:19:07,813 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:19:07,826 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:19:07,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:19:07,827 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:19:07,827 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:19:07,827 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:19:07,827 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:19:07,849 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states. [2020-10-20 06:19:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:19:07,860 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:07,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:07,861 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:07,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:07,866 INFO L82 PathProgramCache]: Analyzing trace with hash -189780735, now seen corresponding path program 1 times [2020-10-20 06:19:07,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:07,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886756104] [2020-10-20 06:19:07,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:08,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:08,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:08,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886756104] [2020-10-20 06:19:08,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:08,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:19:08,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980599060] [2020-10-20 06:19:08,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:19:08,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:08,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:19:08,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:08,124 INFO L87 Difference]: Start difference. First operand 127 states. Second operand 4 states. [2020-10-20 06:19:08,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:08,512 INFO L93 Difference]: Finished difference Result 136 states and 145 transitions. [2020-10-20 06:19:08,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:19:08,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:19:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:08,526 INFO L225 Difference]: With dead ends: 136 [2020-10-20 06:19:08,526 INFO L226 Difference]: Without dead ends: 133 [2020-10-20 06:19:08,528 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 [2020-10-20 06:19:08,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-10-20 06:19:08,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-10-20 06:19:08,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 06:19:08,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 121 transitions. [2020-10-20 06:19:08,577 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 121 transitions. Word has length 7 [2020-10-20 06:19:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:08,577 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 121 transitions. [2020-10-20 06:19:08,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:19:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 121 transitions. [2020-10-20 06:19:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 06:19:08,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:08,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:08,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:19:08,579 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:08,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash -189780734, now seen corresponding path program 1 times [2020-10-20 06:19:08,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:08,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407212270] [2020-10-20 06:19:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:08,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:08,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:08,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:08,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407212270] [2020-10-20 06:19:08,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:08,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:19:08,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226678373] [2020-10-20 06:19:08,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:19:08,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:08,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:19:08,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:19:08,695 INFO L87 Difference]: Start difference. First operand 114 states and 121 transitions. Second operand 4 states. [2020-10-20 06:19:09,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:09,003 INFO L93 Difference]: Finished difference Result 139 states and 147 transitions. [2020-10-20 06:19:09,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:19:09,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 06:19:09,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:09,006 INFO L225 Difference]: With dead ends: 139 [2020-10-20 06:19:09,007 INFO L226 Difference]: Without dead ends: 139 [2020-10-20 06:19:09,007 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 [2020-10-20 06:19:09,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-20 06:19:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2020-10-20 06:19:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 06:19:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 119 transitions. [2020-10-20 06:19:09,019 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 119 transitions. Word has length 7 [2020-10-20 06:19:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:09,020 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 119 transitions. [2020-10-20 06:19:09,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:19:09,020 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 119 transitions. [2020-10-20 06:19:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:19:09,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:09,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:09,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:19:09,022 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:09,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1145035767, now seen corresponding path program 1 times [2020-10-20 06:19:09,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:09,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537543500] [2020-10-20 06:19:09,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:09,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:09,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537543500] [2020-10-20 06:19:09,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:09,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:19:09,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967074938] [2020-10-20 06:19:09,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:09,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:09,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:09,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:09,104 INFO L87 Difference]: Start difference. First operand 112 states and 119 transitions. Second operand 5 states. [2020-10-20 06:19:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:09,431 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2020-10-20 06:19:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:19:09,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 06:19:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:09,432 INFO L225 Difference]: With dead ends: 117 [2020-10-20 06:19:09,433 INFO L226 Difference]: Without dead ends: 117 [2020-10-20 06:19:09,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-20 06:19:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 101. [2020-10-20 06:19:09,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-20 06:19:09,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2020-10-20 06:19:09,441 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 12 [2020-10-20 06:19:09,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:09,442 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2020-10-20 06:19:09,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:09,442 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2020-10-20 06:19:09,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:19:09,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:09,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:09,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:19:09,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:09,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:09,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1145035768, now seen corresponding path program 1 times [2020-10-20 06:19:09,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:09,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88648605] [2020-10-20 06:19:09,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:09,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88648605] [2020-10-20 06:19:09,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:09,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:19:09,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234485163] [2020-10-20 06:19:09,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:09,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:09,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:09,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:09,545 INFO L87 Difference]: Start difference. First operand 101 states and 110 transitions. Second operand 5 states. [2020-10-20 06:19:09,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:09,900 INFO L93 Difference]: Finished difference Result 177 states and 190 transitions. [2020-10-20 06:19:09,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:19:09,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-20 06:19:09,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:09,902 INFO L225 Difference]: With dead ends: 177 [2020-10-20 06:19:09,902 INFO L226 Difference]: Without dead ends: 177 [2020-10-20 06:19:09,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:09,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-20 06:19:09,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 130. [2020-10-20 06:19:09,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-20 06:19:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 146 transitions. [2020-10-20 06:19:09,912 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 146 transitions. Word has length 12 [2020-10-20 06:19:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:09,913 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 146 transitions. [2020-10-20 06:19:09,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 146 transitions. [2020-10-20 06:19:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:19:09,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:09,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:09,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:19:09,914 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:09,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1131195469, now seen corresponding path program 1 times [2020-10-20 06:19:09,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:09,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552124264] [2020-10-20 06:19:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:09,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:10,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:10,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552124264] [2020-10-20 06:19:10,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:10,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:19:10,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026070007] [2020-10-20 06:19:10,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:19:10,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:10,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:19:10,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:10,018 INFO L87 Difference]: Start difference. First operand 130 states and 146 transitions. Second operand 7 states. [2020-10-20 06:19:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:10,570 INFO L93 Difference]: Finished difference Result 192 states and 218 transitions. [2020-10-20 06:19:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:19:10,571 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-20 06:19:10,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:10,574 INFO L225 Difference]: With dead ends: 192 [2020-10-20 06:19:10,574 INFO L226 Difference]: Without dead ends: 192 [2020-10-20 06:19:10,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:19:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-20 06:19:10,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 129. [2020-10-20 06:19:10,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-10-20 06:19:10,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 145 transitions. [2020-10-20 06:19:10,583 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 145 transitions. Word has length 15 [2020-10-20 06:19:10,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:10,583 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 145 transitions. [2020-10-20 06:19:10,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:19:10,584 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 145 transitions. [2020-10-20 06:19:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-20 06:19:10,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:10,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:10,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:19:10,585 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:10,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:10,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1131195470, now seen corresponding path program 1 times [2020-10-20 06:19:10,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:10,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719957715] [2020-10-20 06:19:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:10,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:10,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:10,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:10,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:10,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719957715] [2020-10-20 06:19:10,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:10,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 06:19:10,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864540326] [2020-10-20 06:19:10,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:19:10,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:10,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:19:10,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:10,685 INFO L87 Difference]: Start difference. First operand 129 states and 145 transitions. Second operand 7 states. [2020-10-20 06:19:11,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:11,301 INFO L93 Difference]: Finished difference Result 214 states and 244 transitions. [2020-10-20 06:19:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:19:11,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-20 06:19:11,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:11,303 INFO L225 Difference]: With dead ends: 214 [2020-10-20 06:19:11,304 INFO L226 Difference]: Without dead ends: 214 [2020-10-20 06:19:11,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:19:11,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-10-20 06:19:11,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 115. [2020-10-20 06:19:11,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-20 06:19:11,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 130 transitions. [2020-10-20 06:19:11,311 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 130 transitions. Word has length 15 [2020-10-20 06:19:11,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:11,312 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 130 transitions. [2020-10-20 06:19:11,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:19:11,312 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 130 transitions. [2020-10-20 06:19:11,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:19:11,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:11,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:11,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 06:19:11,314 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:11,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:11,314 INFO L82 PathProgramCache]: Analyzing trace with hash 679644411, now seen corresponding path program 1 times [2020-10-20 06:19:11,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:11,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041369434] [2020-10-20 06:19:11,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:11,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:11,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:11,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041369434] [2020-10-20 06:19:11,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:11,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:19:11,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721935781] [2020-10-20 06:19:11,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:19:11,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:11,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:19:11,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:11,389 INFO L87 Difference]: Start difference. First operand 115 states and 130 transitions. Second operand 6 states. [2020-10-20 06:19:11,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:11,658 INFO L93 Difference]: Finished difference Result 121 states and 133 transitions. [2020-10-20 06:19:11,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:19:11,659 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 06:19:11,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:11,660 INFO L225 Difference]: With dead ends: 121 [2020-10-20 06:19:11,660 INFO L226 Difference]: Without dead ends: 121 [2020-10-20 06:19:11,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:19:11,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-20 06:19:11,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 114. [2020-10-20 06:19:11,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-20 06:19:11,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2020-10-20 06:19:11,666 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 16 [2020-10-20 06:19:11,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:11,667 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2020-10-20 06:19:11,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:19:11,667 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2020-10-20 06:19:11,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 06:19:11,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:11,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:11,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 06:19:11,669 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:11,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:11,670 INFO L82 PathProgramCache]: Analyzing trace with hash 679644412, now seen corresponding path program 1 times [2020-10-20 06:19:11,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:11,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507954712] [2020-10-20 06:19:11,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:11,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:11,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:11,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507954712] [2020-10-20 06:19:11,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:11,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:19:11,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650764964] [2020-10-20 06:19:11,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:19:11,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:11,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:19:11,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:11,769 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 6 states. [2020-10-20 06:19:12,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:12,045 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-10-20 06:19:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:19:12,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-10-20 06:19:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:12,047 INFO L225 Difference]: With dead ends: 113 [2020-10-20 06:19:12,047 INFO L226 Difference]: Without dead ends: 113 [2020-10-20 06:19:12,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:19:12,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-20 06:19:12,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-20 06:19:12,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-20 06:19:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 128 transitions. [2020-10-20 06:19:12,054 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 128 transitions. Word has length 16 [2020-10-20 06:19:12,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:12,054 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 128 transitions. [2020-10-20 06:19:12,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:19:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 128 transitions. [2020-10-20 06:19:12,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-20 06:19:12,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:12,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:12,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 06:19:12,057 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:12,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:12,057 INFO L82 PathProgramCache]: Analyzing trace with hash 696071059, now seen corresponding path program 1 times [2020-10-20 06:19:12,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:12,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618769594] [2020-10-20 06:19:12,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:12,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:12,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:12,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:12,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618769594] [2020-10-20 06:19:12,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:12,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-20 06:19:12,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014726059] [2020-10-20 06:19:12,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:19:12,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:12,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:19:12,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:19:12,133 INFO L87 Difference]: Start difference. First operand 113 states and 128 transitions. Second operand 7 states. [2020-10-20 06:19:12,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:12,562 INFO L93 Difference]: Finished difference Result 209 states and 238 transitions. [2020-10-20 06:19:12,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-20 06:19:12,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-20 06:19:12,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:12,565 INFO L225 Difference]: With dead ends: 209 [2020-10-20 06:19:12,565 INFO L226 Difference]: Without dead ends: 209 [2020-10-20 06:19:12,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-20 06:19:12,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-10-20 06:19:12,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 112. [2020-10-20 06:19:12,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-20 06:19:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-10-20 06:19:12,570 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 19 [2020-10-20 06:19:12,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:12,571 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-10-20 06:19:12,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:19:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-10-20 06:19:12,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-20 06:19:12,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:12,572 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] [2020-10-20 06:19:12,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-20 06:19:12,573 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:12,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1845276885, now seen corresponding path program 1 times [2020-10-20 06:19:12,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:12,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204105787] [2020-10-20 06:19:12,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:12,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:12,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:12,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204105787] [2020-10-20 06:19:12,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:12,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:19:12,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710067329] [2020-10-20 06:19:12,651 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:12,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:12,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:12,652 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand 5 states. [2020-10-20 06:19:12,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:12,841 INFO L93 Difference]: Finished difference Result 163 states and 175 transitions. [2020-10-20 06:19:12,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:19:12,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-20 06:19:12,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:12,843 INFO L225 Difference]: With dead ends: 163 [2020-10-20 06:19:12,843 INFO L226 Difference]: Without dead ends: 163 [2020-10-20 06:19:12,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:12,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-20 06:19:12,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 111. [2020-10-20 06:19:12,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-20 06:19:12,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 124 transitions. [2020-10-20 06:19:12,849 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 124 transitions. Word has length 21 [2020-10-20 06:19:12,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:12,849 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 124 transitions. [2020-10-20 06:19:12,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:12,849 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 124 transitions. [2020-10-20 06:19:12,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:19:12,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:12,851 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, 1, 1] [2020-10-20 06:19:12,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-20 06:19:12,851 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr29REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr31REQUIRES_VIOLATION, mainErr42ASSERT_VIOLATIONMEMORY_FREE, mainErr30REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr28REQUIRES_VIOLATION, mainErr35ASSERT_VIOLATIONMEMORY_FREE, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr47ENSURES_VIOLATIONMEMORY_LEAK, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr44ASSERT_VIOLATIONMEMORY_FREE, mainErr46ASSERT_VIOLATIONMEMORY_FREE, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr40REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr43ASSERT_VIOLATIONMEMORY_FREE, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr34ASSERT_VIOLATIONMEMORY_FREE, mainErr37REQUIRES_VIOLATION, mainErr39REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr36ASSERT_VIOLATIONMEMORY_FREE, mainErr38REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr41ASSERT_VIOLATIONMEMORY_FREE, mainErr32REQUIRES_VIOLATION, mainErr45ASSERT_VIOLATIONMEMORY_FREE, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr33REQUIRES_VIOLATION]=== [2020-10-20 06:19:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:12,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1016411300, now seen corresponding path program 1 times [2020-10-20 06:19:12,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:12,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341150215] [2020-10-20 06:19:12,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:19:12,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:19:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:19:12,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:19:12,939 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:19:12,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:19:12,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-20 06:19:12,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:19:12 BoogieIcfgContainer [2020-10-20 06:19:12,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:19:12,977 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:19:12,977 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:19:12,978 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:19:12,978 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:07" (3/4) ... [2020-10-20 06:19:12,981 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:19:13,033 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:19:13,033 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:19:13,036 INFO L168 Benchmark]: Toolchain (without parser) took 6768.36 ms. Allocated memory was 36.2 MB in the beginning and 88.6 MB in the end (delta: 52.4 MB). Free memory was 14.9 MB in the beginning and 57.4 MB in the end (delta: -42.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:13,037 INFO L168 Benchmark]: CDTParser took 1.40 ms. Allocated memory is still 34.1 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:19:13,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 578.30 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 13.9 MB in the beginning and 26.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:13,038 INFO L168 Benchmark]: Boogie Preprocessor took 70.89 ms. Allocated memory is still 45.6 MB. Free memory was 26.0 MB in the beginning and 22.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:13,039 INFO L168 Benchmark]: RCFGBuilder took 833.39 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 22.6 MB in the beginning and 13.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:13,040 INFO L168 Benchmark]: TraceAbstraction took 5218.94 ms. Allocated memory was 48.2 MB in the beginning and 88.6 MB in the end (delta: 40.4 MB). Free memory was 13.4 MB in the beginning and 60.8 MB in the end (delta: -47.4 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 06:19:13,040 INFO L168 Benchmark]: Witness Printer took 56.11 ms. Allocated memory is still 88.6 MB. Free memory was 60.8 MB in the beginning and 57.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:13,043 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40 ms. Allocated memory is still 34.1 MB. Free memory was 9.8 MB in the beginning and 9.7 MB in the end (delta: 65.6 kB). There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 578.30 ms. Allocated memory was 36.2 MB in the beginning and 45.6 MB in the end (delta: 9.4 MB). Free memory was 13.9 MB in the beginning and 26.0 MB in the end (delta: -12.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 70.89 ms. Allocated memory is still 45.6 MB. Free memory was 26.0 MB in the beginning and 22.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 833.39 ms. Allocated memory was 45.6 MB in the beginning and 48.2 MB in the end (delta: 2.6 MB). Free memory was 22.6 MB in the beginning and 13.7 MB in the end (delta: 8.9 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5218.94 ms. Allocated memory was 48.2 MB in the beginning and 88.6 MB in the end (delta: 40.4 MB). Free memory was 13.4 MB in the beginning and 60.8 MB in the end (delta: -47.4 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 56.11 ms. Allocated memory is still 88.6 MB. Free memory was 60.8 MB in the beginning and 57.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 992]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1003] SLL* head = malloc(sizeof(SLL)); VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1004] head->next = ((void*)0) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1005] head->data = 0 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1007] SLL* x = head; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1010] COND FALSE !(__VERIFIER_nondet_int()) [L1018] x->data = 1 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, x={-1:0}] [L1019] x->next = malloc(sizeof(SLL)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1020] EXPR x->next VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1020] x->next->data = 2 VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->next={-2:0}] [L1022] x = head VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1024] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}] [L1026] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1026] COND FALSE !(1 != x->data) [L1031] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, malloc(sizeof(SLL))={-2:0}, x={-1:0}, x->data=1] [L1031] COND TRUE !(2 == x->data) [L1031] CALL reach_error() [L992] COND FALSE !(0) [L992] __assert_fail ("0", "sll-token-1.c", 12, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 127 locations, 49 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.1s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 889 SDtfs, 1104 SDslu, 1378 SDs, 0 SdLazy, 2821 SolverSat, 175 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=130occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 427 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 166 NumberOfCodeBlocks, 166 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 8442 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...