./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext3-properties/dll_nullified-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 c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 16:03:47,778 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 16:03:47,781 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 16:03:47,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 16:03:47,824 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 16:03:47,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 16:03:47,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 16:03:47,834 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 16:03:47,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 16:03:47,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 16:03:47,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 16:03:47,846 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 16:03:47,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 16:03:47,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 16:03:47,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 16:03:47,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 16:03:47,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 16:03:47,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 16:03:47,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 16:03:47,871 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 16:03:47,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 16:03:48,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 16:03:48,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 16:03:48,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 16:03:48,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 16:03:48,164 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 16:03:48,164 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 16:03:48,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 16:03:48,166 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 16:03:48,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 16:03:48,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 16:03:48,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 16:03:48,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 16:03:48,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 16:03:48,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 16:03:48,169 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 16:03:48,170 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 16:03:48,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 16:03:48,170 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 16:03:48,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 16:03:48,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 16:03:48,174 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-08-30 16:03:48,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 16:03:48,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 16:03:48,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 16:03:48,215 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 16:03:48,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 16:03:48,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 16:03:48,217 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 16:03:48,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 16:03:48,218 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 16:03:48,218 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 16:03:48,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 16:03:48,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 16:03:48,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 16:03:48,219 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 16:03:48,219 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 16:03:48,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 16:03:48,220 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 16:03:48,226 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 16:03:48,226 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 16:03:48,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 16:03:48,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 16:03:48,227 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 16:03:48,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:48,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 16:03:48,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 16:03:48,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 16:03:48,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 16:03:48,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 16:03:48,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6bee9027c6ee41df2f7df0c67f6de4e3d806cb7 [2021-08-30 16:03:48,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 16:03:48,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 16:03:48,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 16:03:48,523 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 16:03:48,523 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 16:03:48,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-08-30 16:03:48,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5fd6888e/694edbd754224e12ba704648238b5ab8/FLAGacd4075ea [2021-08-30 16:03:49,143 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 16:03:49,144 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2021-08-30 16:03:49,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5fd6888e/694edbd754224e12ba704648238b5ab8/FLAGacd4075ea [2021-08-30 16:03:49,605 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5fd6888e/694edbd754224e12ba704648238b5ab8 [2021-08-30 16:03:49,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 16:03:49,609 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 16:03:49,610 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:49,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 16:03:49,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 16:03:49,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50693137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49, skipping insertion in model container [2021-08-30 16:03:49,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 16:03:49,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 16:03:49,879 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-08-30 16:03:49,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:49,888 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 16:03:49,920 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i[24046,24059] [2021-08-30 16:03:49,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 16:03:49,944 INFO L208 MainTranslator]: Completed translation [2021-08-30 16:03:49,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49 WrapperNode [2021-08-30 16:03:49,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 16:03:49,946 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 16:03:49,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 16:03:49,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 16:03:49,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:49,999 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 16:03:50,000 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 16:03:50,000 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 16:03:50,000 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 16:03:50,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (1/1) ... [2021-08-30 16:03:50,007 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 16:03:50,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:50,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 16:03:50,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 16:03:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 16:03:50,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 16:03:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-08-30 16:03:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 16:03:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 16:03:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-08-30 16:03:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2021-08-30 16:03:50,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 16:03:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 16:03:50,059 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 16:03:50,060 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 16:03:50,061 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 16:03:50,062 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 16:03:50,063 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 16:03:50,064 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 16:03:50,065 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 16:03:50,066 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 16:03:50,067 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 16:03:50,068 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 16:03:50,069 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 16:03:50,070 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 16:03:50,071 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 16:03:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 16:03:50,072 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 16:03:50,073 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-08-30 16:03:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2021-08-30 16:03:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 16:03:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 16:03:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 16:03:50,074 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 16:03:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 16:03:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-30 16:03:50,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 16:03:50,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 16:03:50,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 16:03:50,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 16:03:50,369 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-08-30 16:03:50,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 16:03:50,521 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-08-30 16:03:50,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:50 BoogieIcfgContainer [2021-08-30 16:03:50,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 16:03:50,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 16:03:50,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 16:03:50,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 16:03:50,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:03:49" (1/3) ... [2021-08-30 16:03:50,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388349f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:50, skipping insertion in model container [2021-08-30 16:03:50,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:03:49" (2/3) ... [2021-08-30 16:03:50,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388349f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:03:50, skipping insertion in model container [2021-08-30 16:03:50,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:50" (3/3) ... [2021-08-30 16:03:50,537 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2021-08-30 16:03:50,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 16:03:50,547 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-08-30 16:03:50,592 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 16:03:50,601 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 16:03:50,601 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-08-30 16:03:50,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 91 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:03:50,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:03:50,630 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:50,630 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:50,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting dll_createErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:50,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:50,643 INFO L82 PathProgramCache]: Analyzing trace with hash -2056030063, now seen corresponding path program 1 times [2021-08-30 16:03:50,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:50,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273541437] [2021-08-30 16:03:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:50,652 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:50,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:50,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:50,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:50,935 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273541437] [2021-08-30 16:03:50,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273541437] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:50,936 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:50,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:50,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809450932] [2021-08-30 16:03:50,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:50,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:50,977 INFO L87 Difference]: Start difference. First operand has 99 states, 56 states have (on average 1.8928571428571428) internal successors, (106), 91 states have internal predecessors, (106), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:51,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:51,359 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2021-08-30 16:03:51,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:51,361 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 16:03:51,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:51,369 INFO L225 Difference]: With dead ends: 155 [2021-08-30 16:03:51,369 INFO L226 Difference]: Without dead ends: 146 [2021-08-30 16:03:51,371 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.56ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:51,374 INFO L928 BasicCegarLoop]: 8 mSDtfsCounter, 93 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 247.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.96ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 313.03ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:51,375 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 12 Invalid, 285 Unknown, 0 Unchecked, 8.96ms Time], IncrementalHoareTripleChecker [9 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 313.03ms Time] [2021-08-30 16:03:51,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-08-30 16:03:51,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 108. [2021-08-30 16:03:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 72 states have (on average 1.75) internal successors, (126), 101 states have internal predecessors, (126), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 16:03:51,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 132 transitions. [2021-08-30 16:03:51,412 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 132 transitions. Word has length 11 [2021-08-30 16:03:51,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:51,412 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 132 transitions. [2021-08-30 16:03:51,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:51,413 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 132 transitions. [2021-08-30 16:03:51,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-08-30 16:03:51,413 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:51,414 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:51,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 16:03:51,414 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting dll_createErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:51,415 INFO L82 PathProgramCache]: Analyzing trace with hash -2056030062, now seen corresponding path program 1 times [2021-08-30 16:03:51,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:51,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867331069] [2021-08-30 16:03:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:51,416 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:51,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:51,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:51,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:51,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867331069] [2021-08-30 16:03:51,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867331069] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:51,496 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:51,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 16:03:51,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260420993] [2021-08-30 16:03:51,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:51,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:51,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:51,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:51,499 INFO L87 Difference]: Start difference. First operand 108 states and 132 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:51,744 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-08-30 16:03:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 16:03:51,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-08-30 16:03:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:51,751 INFO L225 Difference]: With dead ends: 141 [2021-08-30 16:03:51,752 INFO L226 Difference]: Without dead ends: 141 [2021-08-30 16:03:51,756 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.27ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:51,758 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 82 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 177.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.88ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.74ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:51,759 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 9 Invalid, 259 Unknown, 0 Unchecked, 2.88ms Time], IncrementalHoareTripleChecker [7 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 215.74ms Time] [2021-08-30 16:03:51,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-08-30 16:03:51,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 103. [2021-08-30 16:03:51,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 96 states have internal predecessors, (121), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 16:03:51,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2021-08-30 16:03:51,781 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 11 [2021-08-30 16:03:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:51,782 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2021-08-30 16:03:51,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:51,783 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2021-08-30 16:03:51,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-08-30 16:03:51,783 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:51,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:51,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 16:03:51,784 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:51,785 INFO L82 PathProgramCache]: Analyzing trace with hash -683912238, now seen corresponding path program 1 times [2021-08-30 16:03:51,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:51,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046190429] [2021-08-30 16:03:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:51,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:51,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:51,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:51,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:03:51,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:51,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:51,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:51,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046190429] [2021-08-30 16:03:51,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046190429] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:51,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:51,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-08-30 16:03:51,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553735857] [2021-08-30 16:03:51,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 16:03:51,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:51,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 16:03:51,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-08-30 16:03:51,902 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:52,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:52,258 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2021-08-30 16:03:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:52,259 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2021-08-30 16:03:52,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:52,260 INFO L225 Difference]: With dead ends: 101 [2021-08-30 16:03:52,260 INFO L226 Difference]: Without dead ends: 98 [2021-08-30 16:03:52,260 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 117.46ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:03:52,261 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 91 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 197.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.65ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 255.49ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:52,261 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 19 Invalid, 463 Unknown, 0 Unchecked, 3.65ms Time], IncrementalHoareTripleChecker [6 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 255.49ms Time] [2021-08-30 16:03:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-08-30 16:03:52,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 84. [2021-08-30 16:03:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 78 states have internal predecessors, (88), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:52,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2021-08-30 16:03:52,267 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 14 [2021-08-30 16:03:52,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:52,268 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2021-08-30 16:03:52,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:52,268 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2021-08-30 16:03:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 16:03:52,269 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:52,269 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:52,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-30 16:03:52,269 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting dll_createErr10REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:52,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash 1129091757, now seen corresponding path program 1 times [2021-08-30 16:03:52,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:52,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616561282] [2021-08-30 16:03:52,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:52,271 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:52,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:52,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:52,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616561282] [2021-08-30 16:03:52,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616561282] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:52,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:52,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-30 16:03:52,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492475824] [2021-08-30 16:03:52,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 16:03:52,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:52,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 16:03:52,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 16:03:52,335 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:52,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:52,511 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2021-08-30 16:03:52,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 16:03:52,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2021-08-30 16:03:52,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:52,512 INFO L225 Difference]: With dead ends: 95 [2021-08-30 16:03:52,512 INFO L226 Difference]: Without dead ends: 95 [2021-08-30 16:03:52,513 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 16:03:52,513 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 153.92ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:52,514 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 11 Invalid, 261 Unknown, 0 Unchecked, 1.35ms Time], IncrementalHoareTripleChecker [3 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 153.92ms Time] [2021-08-30 16:03:52,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-08-30 16:03:52,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-08-30 16:03:52,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.546875) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:52,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-08-30 16:03:52,519 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 20 [2021-08-30 16:03:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:52,519 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-08-30 16:03:52,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:52,519 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-08-30 16:03:52,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 16:03:52,520 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:52,520 INFO L513 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] [2021-08-30 16:03:52,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 16:03:52,520 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:52,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:52,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598106, now seen corresponding path program 1 times [2021-08-30 16:03:52,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:52,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287076195] [2021-08-30 16:03:52,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:52,521 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:52,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:03:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:52,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:52,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287076195] [2021-08-30 16:03:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287076195] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:03:52,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:03:52,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 16:03:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278166284] [2021-08-30 16:03:52,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:03:52,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:03:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:03:52,632 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:03:52,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:53,000 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2021-08-30 16:03:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:53,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2021-08-30 16:03:53,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:53,001 INFO L225 Difference]: With dead ends: 94 [2021-08-30 16:03:53,001 INFO L226 Difference]: Without dead ends: 94 [2021-08-30 16:03:53,002 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 78.87ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:03:53,003 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 79 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 252.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.26ms SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 310.99ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:53,003 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 22 Invalid, 655 Unknown, 0 Unchecked, 4.26ms Time], IncrementalHoareTripleChecker [19 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 310.99ms Time] [2021-08-30 16:03:53,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-08-30 16:03:53,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 88. [2021-08-30 16:03:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.4328358208955223) internal successors, (96), 82 states have internal predecessors, (96), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2021-08-30 16:03:53,009 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 26 [2021-08-30 16:03:53,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:53,009 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2021-08-30 16:03:53,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:03:53,010 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2021-08-30 16:03:53,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-30 16:03:53,010 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:53,010 INFO L513 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] [2021-08-30 16:03:53,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-30 16:03:53,011 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:53,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:53,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598105, now seen corresponding path program 1 times [2021-08-30 16:03:53,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:53,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922742410] [2021-08-30 16:03:53,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:53,012 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:53,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:53,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:03:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:53,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:53,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922742410] [2021-08-30 16:03:53,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922742410] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:53,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798610095] [2021-08-30 16:03:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:53,144 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:53,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:53,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:03:53,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 16:03:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:53,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 16:03:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:53,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:53,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798610095] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:53,684 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:53,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 12 [2021-08-30 16:03:53,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098887531] [2021-08-30 16:03:53,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 16:03:53,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:53,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 16:03:53,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:03:53,688 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand has 12 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:03:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:53,976 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2021-08-30 16:03:53,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 16:03:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-08-30 16:03:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:53,977 INFO L225 Difference]: With dead ends: 106 [2021-08-30 16:03:53,977 INFO L226 Difference]: Without dead ends: 103 [2021-08-30 16:03:53,977 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 144.52ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-30 16:03:53,978 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 191 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 161.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.77ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 198.75ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:53,978 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 15 Invalid, 376 Unknown, 0 Unchecked, 3.77ms Time], IncrementalHoareTripleChecker [12 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 198.75ms Time] [2021-08-30 16:03:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-30 16:03:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 90. [2021-08-30 16:03:53,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 69 states have (on average 1.4202898550724639) internal successors, (98), 84 states have internal predecessors, (98), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-08-30 16:03:53,982 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 26 [2021-08-30 16:03:53,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:53,983 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-08-30 16:03:53,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 5.0) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:03:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-08-30 16:03:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 16:03:53,983 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:53,984 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:54,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:54,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-30 16:03:54,212 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:54,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:54,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1306178878, now seen corresponding path program 1 times [2021-08-30 16:03:54,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:54,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337309623] [2021-08-30 16:03:54,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:54,213 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:54,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:54,322 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:54,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:54,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337309623] [2021-08-30 16:03:54,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337309623] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:54,323 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553403022] [2021-08-30 16:03:54,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:54,324 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:54,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:54,333 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:03:54,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 16:03:54,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:54,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 16:03:54,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:54,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:54,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:54,634 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 16:03:54,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-08-30 16:03:54,648 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:03:54,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-08-30 16:03:54,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:54,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:55,294 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:55,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553403022] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:55,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:55,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-08-30 16:03:55,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450510578] [2021-08-30 16:03:55,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 16:03:55,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:55,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 16:03:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:03:55,296 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:55,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:55,559 INFO L93 Difference]: Finished difference Result 107 states and 123 transitions. [2021-08-30 16:03:55,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-30 16:03:55,560 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-08-30 16:03:55,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:55,562 INFO L225 Difference]: With dead ends: 107 [2021-08-30 16:03:55,562 INFO L226 Difference]: Without dead ends: 107 [2021-08-30 16:03:55,563 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 108.47ms TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:55,564 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 28 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 185.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.96ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 175 IncrementalHoareTripleChecker+Unchecked, 225.02ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:55,564 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 24 Invalid, 632 Unknown, 0 Unchecked, 2.96ms Time], IncrementalHoareTripleChecker [4 Valid, 453 Invalid, 0 Unknown, 175 Unchecked, 225.02ms Time] [2021-08-30 16:03:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-30 16:03:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2021-08-30 16:03:55,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 97 states have internal predecessors, (114), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:55,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2021-08-30 16:03:55,568 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 32 [2021-08-30 16:03:55,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:55,569 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2021-08-30 16:03:55,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 10 states have internal predecessors, (77), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:55,569 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2021-08-30 16:03:55,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-08-30 16:03:55,570 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:55,570 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:55,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:55,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-08-30 16:03:55,793 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:55,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:55,793 INFO L82 PathProgramCache]: Analyzing trace with hash 773915643, now seen corresponding path program 2 times [2021-08-30 16:03:55,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:55,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63143190] [2021-08-30 16:03:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:55,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:03:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:55,892 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:55,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:55,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63143190] [2021-08-30 16:03:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63143190] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:55,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561752096] [2021-08-30 16:03:55,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 16:03:55,894 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:55,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:55,905 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:03:55,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 16:03:56,030 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 16:03:56,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 16:03:56,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 16:03:56,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:56,152 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:56,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:56,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:03:56,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561752096] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:56,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:56,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2021-08-30 16:03:56,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590098789] [2021-08-30 16:03:56,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 16:03:56,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:56,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 16:03:56,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-08-30 16:03:56,388 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 16:03:56,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:56,941 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2021-08-30 16:03:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:03:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-08-30 16:03:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:56,942 INFO L225 Difference]: With dead ends: 119 [2021-08-30 16:03:56,942 INFO L226 Difference]: Without dead ends: 116 [2021-08-30 16:03:56,943 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 208.37ms TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2021-08-30 16:03:56,943 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 150 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 342.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.49ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 419.12ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:56,944 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 45 Invalid, 866 Unknown, 0 Unchecked, 4.49ms Time], IncrementalHoareTripleChecker [15 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 419.12ms Time] [2021-08-30 16:03:56,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-08-30 16:03:56,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2021-08-30 16:03:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 82 states have (on average 1.353658536585366) internal successors, (111), 97 states have internal predecessors, (111), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:56,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2021-08-30 16:03:56,947 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 38 [2021-08-30 16:03:56,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:56,948 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2021-08-30 16:03:56,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 3 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-30 16:03:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2021-08-30 16:03:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 16:03:56,955 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:56,955 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:56,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:57,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:57,156 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:57,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1189077604, now seen corresponding path program 1 times [2021-08-30 16:03:57,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:57,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073449053] [2021-08-30 16:03:57,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:57,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:57,258 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:03:57,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:57,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073449053] [2021-08-30 16:03:57,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073449053] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:57,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542729059] [2021-08-30 16:03:57,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:57,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:57,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:57,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:03:57,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 16:03:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:57,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 16:03:57,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:57,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:57,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:57,578 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 16:03:57,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-08-30 16:03:57,586 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:03:57,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-08-30 16:03:57,748 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:03:57,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:03:58,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542729059] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:58,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:58,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-08-30 16:03:58,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636567644] [2021-08-30 16:03:58,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 16:03:58,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:58,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 16:03:58,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:03:58,079 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand has 11 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:58,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:58,287 INFO L93 Difference]: Finished difference Result 115 states and 128 transitions. [2021-08-30 16:03:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 16:03:58,287 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-08-30 16:03:58,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:58,288 INFO L225 Difference]: With dead ends: 115 [2021-08-30 16:03:58,288 INFO L226 Difference]: Without dead ends: 115 [2021-08-30 16:03:58,288 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 98.83ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-08-30 16:03:58,289 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 21 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 145.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.30ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 152 IncrementalHoareTripleChecker+Unchecked, 176.68ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:58,289 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 21 Invalid, 504 Unknown, 0 Unchecked, 2.30ms Time], IncrementalHoareTripleChecker [3 Valid, 349 Invalid, 0 Unknown, 152 Unchecked, 176.68ms Time] [2021-08-30 16:03:58,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-08-30 16:03:58,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109. [2021-08-30 16:03:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.3295454545454546) internal successors, (117), 103 states have internal predecessors, (117), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2021-08-30 16:03:58,293 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 45 [2021-08-30 16:03:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:58,293 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2021-08-30 16:03:58,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:58,293 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2021-08-30 16:03:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-30 16:03:58,294 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:58,294 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:58,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-08-30 16:03:58,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:58,505 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting dll_createErr11REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:58,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:58,505 INFO L82 PathProgramCache]: Analyzing trace with hash -1330882330, now seen corresponding path program 1 times [2021-08-30 16:03:58,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:58,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239644854] [2021-08-30 16:03:58,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:58,506 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:58,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:03:58,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:03:58,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239644854] [2021-08-30 16:03:58,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239644854] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:03:58,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215976415] [2021-08-30 16:03:58,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:58,659 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:03:58,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:03:58,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:03:58,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-30 16:03:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:58,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-30 16:03:58,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:03:58,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:58,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:03:58,934 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 16:03:58,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2021-08-30 16:03:58,941 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:03:58,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 21 [2021-08-30 16:03:59,092 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:03:59,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:03:59,413 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 16:03:59,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215976415] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:03:59,413 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:03:59,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-08-30 16:03:59,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522644617] [2021-08-30 16:03:59,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-08-30 16:03:59,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:03:59,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-08-30 16:03:59,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-08-30 16:03:59,415 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 11 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:59,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:03:59,643 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-08-30 16:03:59,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:03:59,643 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-08-30 16:03:59,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:03:59,644 INFO L225 Difference]: With dead ends: 114 [2021-08-30 16:03:59,644 INFO L226 Difference]: Without dead ends: 114 [2021-08-30 16:03:59,645 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 113.53ms TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-08-30 16:03:59,645 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 17 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 135.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.06ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 172.26ms IncrementalHoareTripleChecker+Time [2021-08-30 16:03:59,645 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 21 Invalid, 539 Unknown, 0 Unchecked, 2.06ms Time], IncrementalHoareTripleChecker [5 Valid, 306 Invalid, 0 Unknown, 228 Unchecked, 172.26ms Time] [2021-08-30 16:03:59,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-08-30 16:03:59,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 102. [2021-08-30 16:03:59,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 82 states have (on average 1.3414634146341464) internal successors, (110), 96 states have internal predecessors, (110), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:03:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 115 transitions. [2021-08-30 16:03:59,648 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 115 transitions. Word has length 45 [2021-08-30 16:03:59,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:03:59,649 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 115 transitions. [2021-08-30 16:03:59,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 16:03:59,649 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 115 transitions. [2021-08-30 16:03:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-30 16:03:59,650 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:03:59,650 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:03:59,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-30 16:03:59,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-08-30 16:03:59,851 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:03:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:03:59,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1265167833, now seen corresponding path program 1 times [2021-08-30 16:03:59,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:03:59,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68831383] [2021-08-30 16:03:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:03:59,852 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:03:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:59,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:03:59,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:03:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:03:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:00,001 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:00,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:00,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68831383] [2021-08-30 16:04:00,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68831383] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:04:00,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151770299] [2021-08-30 16:04:00,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:00,003 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:00,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:04:00,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:04:00,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-30 16:04:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:00,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 16:04:00,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:00,238 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:00,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:00,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151770299] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:04:00,523 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:04:00,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 16 [2021-08-30 16:04:00,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579580823] [2021-08-30 16:04:00,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-08-30 16:04:00,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-08-30 16:04:00,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2021-08-30 16:04:00,527 INFO L87 Difference]: Start difference. First operand 102 states and 115 transitions. Second operand has 16 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:04:00,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:00,924 INFO L93 Difference]: Finished difference Result 130 states and 145 transitions. [2021-08-30 16:04:00,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 16:04:00,925 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2021-08-30 16:04:00,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:00,926 INFO L225 Difference]: With dead ends: 130 [2021-08-30 16:04:00,926 INFO L226 Difference]: Without dead ends: 127 [2021-08-30 16:04:00,926 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 176.00ms TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2021-08-30 16:04:00,927 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 189 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 239.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.11ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 299.02ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:00,927 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 27 Invalid, 614 Unknown, 0 Unchecked, 4.11ms Time], IncrementalHoareTripleChecker [12 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 299.02ms Time] [2021-08-30 16:04:00,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2021-08-30 16:04:00,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115. [2021-08-30 16:04:00,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 95 states have (on average 1.305263157894737) internal successors, (124), 109 states have internal predecessors, (124), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:00,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2021-08-30 16:04:00,930 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 52 [2021-08-30 16:04:00,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:00,931 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2021-08-30 16:04:00,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.285714285714286) internal successors, (102), 14 states have internal predecessors, (102), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-30 16:04:00,931 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2021-08-30 16:04:00,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-30 16:04:00,932 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:00,932 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:00,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:01,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:01,141 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:01,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:01,141 INFO L82 PathProgramCache]: Analyzing trace with hash -638876471, now seen corresponding path program 2 times [2021-08-30 16:04:01,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:01,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184110491] [2021-08-30 16:04:01,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:01,142 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:01,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:01,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:04:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:01,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:04:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:01,301 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:01,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:01,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184110491] [2021-08-30 16:04:01,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184110491] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:04:01,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538570220] [2021-08-30 16:04:01,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 16:04:01,302 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:01,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:04:01,303 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:04:01,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-30 16:04:01,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-30 16:04:01,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 16:04:01,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-30 16:04:01,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:01,560 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:01,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:01,970 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 16:04:01,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538570220] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:04:01,970 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:04:01,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 17 [2021-08-30 16:04:01,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658920408] [2021-08-30 16:04:01,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-08-30 16:04:01,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:01,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-08-30 16:04:01,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2021-08-30 16:04:01,972 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 17 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:02,438 INFO L93 Difference]: Finished difference Result 143 states and 159 transitions. [2021-08-30 16:04:02,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-30 16:04:02,439 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2021-08-30 16:04:02,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:02,440 INFO L225 Difference]: With dead ends: 143 [2021-08-30 16:04:02,440 INFO L226 Difference]: Without dead ends: 140 [2021-08-30 16:04:02,441 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 124 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 201.56ms TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-08-30 16:04:02,441 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 145 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 296.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.73ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 365.99ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:02,441 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 35 Invalid, 785 Unknown, 0 Unchecked, 4.73ms Time], IncrementalHoareTripleChecker [11 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 365.99ms Time] [2021-08-30 16:04:02,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-30 16:04:02,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 128. [2021-08-30 16:04:02,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 108 states have (on average 1.2777777777777777) internal successors, (138), 122 states have internal predecessors, (138), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:02,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2021-08-30 16:04:02,445 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 65 [2021-08-30 16:04:02,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:02,445 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2021-08-30 16:04:02,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 7.9375) internal successors, (127), 15 states have internal predecessors, (127), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:02,445 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2021-08-30 16:04:02,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-30 16:04:02,446 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:02,446 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:02,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:02,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:02,669 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:02,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:02,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1355159193, now seen corresponding path program 3 times [2021-08-30 16:04:02,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:02,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736211703] [2021-08-30 16:04:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:02,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:04:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:02,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:04:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-08-30 16:04:02,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:02,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736211703] [2021-08-30 16:04:02,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736211703] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:04:02,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:04:02,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-08-30 16:04:02,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641049825] [2021-08-30 16:04:02,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:04:02,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:02,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:04:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:04:02,888 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:04:03,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:03,257 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2021-08-30 16:04:03,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:04:03,257 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2021-08-30 16:04:03,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:03,258 INFO L225 Difference]: With dead ends: 163 [2021-08-30 16:04:03,258 INFO L226 Difference]: Without dead ends: 163 [2021-08-30 16:04:03,258 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 88.56ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:04:03,259 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 64 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 668 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 262.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.02ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 317.72ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:03,259 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 22 Invalid, 682 Unknown, 0 Unchecked, 3.02ms Time], IncrementalHoareTripleChecker [14 Valid, 668 Invalid, 0 Unknown, 0 Unchecked, 317.72ms Time] [2021-08-30 16:04:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-08-30 16:04:03,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 154. [2021-08-30 16:04:03,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2761194029850746) internal successors, (171), 148 states have internal predecessors, (171), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:03,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 176 transitions. [2021-08-30 16:04:03,265 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 176 transitions. Word has length 78 [2021-08-30 16:04:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:03,265 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 176 transitions. [2021-08-30 16:04:03,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 6 states have internal predecessors, (36), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:04:03,265 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 176 transitions. [2021-08-30 16:04:03,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-08-30 16:04:03,266 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:03,266 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:03,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-30 16:04:03,266 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr22ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:03,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:03,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1136298550, now seen corresponding path program 1 times [2021-08-30 16:04:03,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:03,267 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324202533] [2021-08-30 16:04:03,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:03,267 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:04:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:03,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:04:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:03,401 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-08-30 16:04:03,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:03,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324202533] [2021-08-30 16:04:03,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324202533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 16:04:03,402 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 16:04:03,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-08-30 16:04:03,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503029725] [2021-08-30 16:04:03,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 16:04:03,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:03,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 16:04:03,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-08-30 16:04:03,403 INFO L87 Difference]: Start difference. First operand 154 states and 176 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:04:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:03,737 INFO L93 Difference]: Finished difference Result 160 states and 180 transitions. [2021-08-30 16:04:03,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 16:04:03,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2021-08-30 16:04:03,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:03,739 INFO L225 Difference]: With dead ends: 160 [2021-08-30 16:04:03,739 INFO L226 Difference]: Without dead ends: 160 [2021-08-30 16:04:03,739 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 60.94ms TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-08-30 16:04:03,740 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 60 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 238.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.15ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 292.93ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:03,740 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 31 Invalid, 663 Unknown, 0 Unchecked, 3.15ms Time], IncrementalHoareTripleChecker [4 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 292.93ms Time] [2021-08-30 16:04:03,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-30 16:04:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-08-30 16:04:03,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2686567164179106) internal successors, (170), 148 states have internal predecessors, (170), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2021-08-30 16:04:03,743 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 82 [2021-08-30 16:04:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:03,744 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2021-08-30 16:04:03,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 16:04:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2021-08-30 16:04:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-08-30 16:04:03,745 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:03,745 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:03,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-30 16:04:03,745 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:03,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:03,746 INFO L82 PathProgramCache]: Analyzing trace with hash -22511990, now seen corresponding path program 1 times [2021-08-30 16:04:03,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:03,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282234216] [2021-08-30 16:04:03,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:03,746 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:03,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:04:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:04:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:04,014 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-08-30 16:04:04,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:04,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282234216] [2021-08-30 16:04:04,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282234216] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:04:04,015 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771209660] [2021-08-30 16:04:04,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:04,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:04,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:04:04,016 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:04:04,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-30 16:04:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:04,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 33 conjunts are in the unsatisfiable core [2021-08-30 16:04:04,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:04,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:04:04,273 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:04:04,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-30 16:04:04,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-30 16:04:04,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-08-30 16:04:04,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-08-30 16:04:04,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-08-30 16:04:04,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-08-30 16:04:04,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:04,502 INFO L354 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2021-08-30 16:04:04,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 27 [2021-08-30 16:04:04,651 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-30 16:04:04,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-08-30 16:04:04,667 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-30 16:04:04,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:25,973 WARN L838 $PredicateComparison]: unable to prove that (forall ((|dll_create_#t~ite7| Int) (v_DerPreprocessor_3 Int) (dll_create_~head~0.offset Int) (v_DerPreprocessor_2 Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_dll_create_~new_head~0.base (store (store (store (store (select |c_#memory_int| c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 8) 0) (+ 16 c_dll_create_~new_head~0.offset) |dll_create_#t~ite7|) (+ c_dll_create_~new_head~0.offset 4) v_DerPreprocessor_3) (+ c_dll_create_~new_head~0.offset 12) v_DerPreprocessor_2)))) (store .cse0 c_dll_create_~head~0.base (store (select .cse0 c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_1))) c_dll_create_~new_head~0.base) c_dll_create_~new_head~0.offset) 0)) is different from false [2021-08-30 16:04:26,238 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 1 not checked. [2021-08-30 16:04:26,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771209660] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:04:26,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:04:26,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 17] total 30 [2021-08-30 16:04:26,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900427344] [2021-08-30 16:04:26,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-08-30 16:04:26,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:26,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-08-30 16:04:26,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=690, Unknown=33, NotChecked=54, Total=870 [2021-08-30 16:04:26,241 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 26 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 16:04:30,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:30,153 INFO L93 Difference]: Finished difference Result 160 states and 179 transitions. [2021-08-30 16:04:30,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 16:04:30,153 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 26 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 86 [2021-08-30 16:04:30,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:30,154 INFO L225 Difference]: With dead ends: 160 [2021-08-30 16:04:30,154 INFO L226 Difference]: Without dead ends: 160 [2021-08-30 16:04:30,155 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 24493.00ms TimeCoverageRelationStatistics Valid=246, Invalid=1446, Unknown=34, NotChecked=80, Total=1806 [2021-08-30 16:04:30,155 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 131 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 509.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 1979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.80ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 615.38ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:30,155 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 70 Invalid, 1979 Unknown, 0 Unchecked, 7.80ms Time], IncrementalHoareTripleChecker [32 Valid, 1435 Invalid, 0 Unknown, 512 Unchecked, 615.38ms Time] [2021-08-30 16:04:30,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-30 16:04:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-08-30 16:04:30,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2611940298507462) internal successors, (169), 148 states have internal predecessors, (169), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 174 transitions. [2021-08-30 16:04:30,159 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 174 transitions. Word has length 86 [2021-08-30 16:04:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:30,159 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 174 transitions. [2021-08-30 16:04:30,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 3.466666666666667) internal successors, (104), 26 states have internal predecessors, (104), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 16:04:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 174 transitions. [2021-08-30 16:04:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-08-30 16:04:30,160 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:30,160 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-08-30 16:04:30,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:30,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-30 16:04:30,377 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:30,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:30,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1467603535, now seen corresponding path program 1 times [2021-08-30 16:04:30,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:30,377 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714454628] [2021-08-30 16:04:30,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:30,378 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:04:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:30,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:04:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:30,787 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-08-30 16:04:30,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:30,787 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714454628] [2021-08-30 16:04:30,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714454628] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:04:30,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848684770] [2021-08-30 16:04:30,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:30,788 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:30,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:04:30,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:04:30,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-30 16:04:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:30,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 31 conjunts are in the unsatisfiable core [2021-08-30 16:04:30,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:31,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:04:31,053 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:04:31,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-30 16:04:31,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-30 16:04:31,130 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-08-30 16:04:31,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2021-08-30 16:04:31,153 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-08-30 16:04:31,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-08-30 16:04:31,170 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-08-30 16:04:31,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-08-30 16:04:31,193 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-08-30 16:04:31,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 17 [2021-08-30 16:04:31,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-08-30 16:04:31,323 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-30 16:04:31,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:31,957 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_4 Int) (dll_create_~head~0.offset Int)) (= (select (select (store |c_#memory_int| c_dll_create_~head~0.base (store (select |c_#memory_int| c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_4)) c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 8)) 0)) is different from false [2021-08-30 16:04:46,410 WARN L838 $PredicateComparison]: unable to prove that (forall ((|dll_create_#t~ite7| Int) (v_DerPreprocessor_6 Int) (v_DerPreprocessor_5 Int) (v_DerPreprocessor_4 Int) (dll_create_~head~0.offset Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_dll_create_~new_head~0.base (store (store (store (select |c_#memory_int| c_dll_create_~new_head~0.base) (+ 16 c_dll_create_~new_head~0.offset) |dll_create_#t~ite7|) (+ c_dll_create_~new_head~0.offset 4) v_DerPreprocessor_6) (+ c_dll_create_~new_head~0.offset 12) v_DerPreprocessor_5)))) (store .cse0 c_dll_create_~head~0.base (store (select .cse0 c_dll_create_~head~0.base) (+ 12 dll_create_~head~0.offset) v_DerPreprocessor_4))) c_dll_create_~new_head~0.base) (+ c_dll_create_~new_head~0.offset 8)) 0)) is different from false [2021-08-30 16:04:46,617 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 5 not checked. [2021-08-30 16:04:46,618 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848684770] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:04:46,618 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:04:46,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 17] total 29 [2021-08-30 16:04:46,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990763814] [2021-08-30 16:04:46,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-08-30 16:04:46,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:46,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-08-30 16:04:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=616, Unknown=18, NotChecked=102, Total=812 [2021-08-30 16:04:46,621 INFO L87 Difference]: Start difference. First operand 154 states and 174 transitions. Second operand has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 25 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 16:04:49,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:49,326 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2021-08-30 16:04:49,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-30 16:04:49,326 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 25 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 88 [2021-08-30 16:04:49,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:49,327 INFO L225 Difference]: With dead ends: 160 [2021-08-30 16:04:49,327 INFO L226 Difference]: Without dead ends: 160 [2021-08-30 16:04:49,328 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 181 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 17057.88ms TimeCoverageRelationStatistics Valid=202, Invalid=1268, Unknown=20, NotChecked=150, Total=1640 [2021-08-30 16:04:49,328 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 115 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1733 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 561.06ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.49ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 275 IncrementalHoareTripleChecker+Unchecked, 701.80ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:49,328 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 71 Invalid, 2059 Unknown, 0 Unchecked, 6.49ms Time], IncrementalHoareTripleChecker [51 Valid, 1733 Invalid, 0 Unknown, 275 Unchecked, 701.80ms Time] [2021-08-30 16:04:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-30 16:04:49,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 154. [2021-08-30 16:04:49,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 148 states have internal predecessors, (168), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 173 transitions. [2021-08-30 16:04:49,332 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 173 transitions. Word has length 88 [2021-08-30 16:04:49,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:49,333 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 173 transitions. [2021-08-30 16:04:49,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.7241379310344827) internal successors, (108), 25 states have internal predecessors, (108), 1 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 16:04:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 173 transitions. [2021-08-30 16:04:49,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-08-30 16:04:49,334 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:49,334 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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] [2021-08-30 16:04:49,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:49,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-30 16:04:49,541 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:49,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2087514772, now seen corresponding path program 1 times [2021-08-30 16:04:49,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:49,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166596946] [2021-08-30 16:04:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:49,542 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:49,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-08-30 16:04:49,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-08-30 16:04:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:49,840 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 74 proven. 11 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-08-30 16:04:49,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 16:04:49,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166596946] [2021-08-30 16:04:49,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166596946] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 16:04:49,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984604179] [2021-08-30 16:04:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:49,841 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 16:04:49,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 16:04:49,842 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 16:04:49,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-30 16:04:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 16:04:49,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 32 conjunts are in the unsatisfiable core [2021-08-30 16:04:49,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 16:04:50,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 16:04:50,144 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-30 16:04:50,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-08-30 16:04:50,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-30 16:04:50,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:50,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-08-30 16:04:50,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:50,325 INFO L354 Elim1Store]: treesize reduction 68, result has 21.8 percent of original size [2021-08-30 16:04:50,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 42 [2021-08-30 16:04:50,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-08-30 16:04:50,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 16:04:50,581 INFO L354 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2021-08-30 16:04:50,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 46 treesize of output 24 [2021-08-30 16:04:50,630 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-30 16:04:50,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 16:04:52,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-08-30 16:04:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-08-30 16:04:52,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984604179] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 16:04:52,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 16:04:52,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14] total 38 [2021-08-30 16:04:52,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604612958] [2021-08-30 16:04:52,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-08-30 16:04:52,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 16:04:52,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-08-30 16:04:52,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1296, Unknown=2, NotChecked=0, Total=1406 [2021-08-30 16:04:52,382 INFO L87 Difference]: Start difference. First operand 154 states and 173 transitions. Second operand has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 33 states have internal predecessors, (134), 1 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 16:04:53,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 16:04:53,397 INFO L93 Difference]: Finished difference Result 143 states and 157 transitions. [2021-08-30 16:04:53,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-30 16:04:53,398 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 33 states have internal predecessors, (134), 1 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 89 [2021-08-30 16:04:53,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 16:04:53,398 INFO L225 Difference]: With dead ends: 143 [2021-08-30 16:04:53,398 INFO L226 Difference]: Without dead ends: 143 [2021-08-30 16:04:53,399 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 161 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2123.86ms TimeCoverageRelationStatistics Valid=285, Invalid=2469, Unknown=2, NotChecked=0, Total=2756 [2021-08-30 16:04:53,400 INFO L928 BasicCegarLoop]: 5 mSDtfsCounter, 55 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 491.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 2035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.78ms SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 608.24ms IncrementalHoareTripleChecker+Time [2021-08-30 16:04:53,400 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 85 Invalid, 2035 Unknown, 0 Unchecked, 4.78ms Time], IncrementalHoareTripleChecker [45 Valid, 1709 Invalid, 0 Unknown, 281 Unchecked, 608.24ms Time] [2021-08-30 16:04:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-30 16:04:53,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 140. [2021-08-30 16:04:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.25) internal successors, (150), 134 states have internal predecessors, (150), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 16:04:53,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 155 transitions. [2021-08-30 16:04:53,403 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 155 transitions. Word has length 89 [2021-08-30 16:04:53,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 16:04:53,404 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 155 transitions. [2021-08-30 16:04:53,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.526315789473684) internal successors, (134), 33 states have internal predecessors, (134), 1 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 16:04:53,404 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 155 transitions. [2021-08-30 16:04:53,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-30 16:04:53,404 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 16:04:53,405 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 16:04:53,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-30 16:04:53,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-30 16:04:53,622 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr21ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 30 more)] === [2021-08-30 16:04:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 16:04:53,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1619301044, now seen corresponding path program 1 times [2021-08-30 16:04:53,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 16:04:53,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846541235] [2021-08-30 16:04:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 16:04:53,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 16:04:53,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:04:53,677 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-30 16:04:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-30 16:04:53,759 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-30 16:04:53,759 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-30 16:04:53,760 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr21ASSERT_VIOLATIONMEMORY_LEAK (34 of 35 remaining) [2021-08-30 16:04:53,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION (33 of 35 remaining) [2021-08-30 16:04:53,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION (32 of 35 remaining) [2021-08-30 16:04:53,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION (31 of 35 remaining) [2021-08-30 16:04:53,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION (30 of 35 remaining) [2021-08-30 16:04:53,762 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION (29 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION (28 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION (27 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION (26 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION (25 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION (24 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION (23 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION (22 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12REQUIRES_VIOLATION (21 of 35 remaining) [2021-08-30 16:04:53,763 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION (20 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION (19 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION (18 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION (17 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17REQUIRES_VIOLATION (16 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18ASSERT_VIOLATIONMEMORY_FREE (15 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19ASSERT_VIOLATIONMEMORY_FREE (14 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20ASSERT_VIOLATIONMEMORY_FREE (13 of 35 remaining) [2021-08-30 16:04:53,764 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22ENSURES_VIOLATIONMEMORY_LEAK (12 of 35 remaining) [2021-08-30 16:04:53,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr0REQUIRES_VIOLATION (11 of 35 remaining) [2021-08-30 16:04:53,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr1REQUIRES_VIOLATION (10 of 35 remaining) [2021-08-30 16:04:53,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr2REQUIRES_VIOLATION (9 of 35 remaining) [2021-08-30 16:04:53,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr3REQUIRES_VIOLATION (8 of 35 remaining) [2021-08-30 16:04:53,765 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr4REQUIRES_VIOLATION (7 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr5REQUIRES_VIOLATION (6 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr6REQUIRES_VIOLATION (5 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr7REQUIRES_VIOLATION (4 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr8REQUIRES_VIOLATION (3 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr9REQUIRES_VIOLATION (2 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr10REQUIRES_VIOLATION (1 of 35 remaining) [2021-08-30 16:04:53,766 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location dll_createErr11REQUIRES_VIOLATION (0 of 35 remaining) [2021-08-30 16:04:53,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-30 16:04:53,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 16:04:53,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:04:53 BoogieIcfgContainer [2021-08-30 16:04:53,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 16:04:53,844 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 16:04:53,844 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 16:04:53,852 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 16:04:53,852 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:03:50" (3/4) ... [2021-08-30 16:04:53,854 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-30 16:04:53,920 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 16:04:53,920 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 16:04:53,921 INFO L158 Benchmark]: Toolchain (without parser) took 64311.87ms. Allocated memory was 52.4MB in the beginning and 142.6MB in the end (delta: 90.2MB). Free memory was 27.8MB in the beginning and 81.3MB in the end (delta: -53.5MB). Peak memory consumption was 38.6MB. Max. memory is 16.1GB. [2021-08-30 16:04:53,921 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 16:04:53,922 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.78ms. Allocated memory is still 52.4MB. Free memory was 27.7MB in the beginning and 24.7MB in the end (delta: 3.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-08-30 16:04:53,923 INFO L158 Benchmark]: Boogie Preprocessor took 53.99ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 24.7MB in the beginning and 46.5MB in the end (delta: -21.8MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2021-08-30 16:04:53,927 INFO L158 Benchmark]: RCFGBuilder took 523.58ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 40.6MB in the end (delta: 5.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2021-08-30 16:04:53,927 INFO L158 Benchmark]: TraceAbstraction took 63317.76ms. Allocated memory was 65.0MB in the beginning and 142.6MB in the end (delta: 77.6MB). Free memory was 40.0MB in the beginning and 86.6MB in the end (delta: -46.5MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2021-08-30 16:04:53,927 INFO L158 Benchmark]: Witness Printer took 76.01ms. Allocated memory is still 142.6MB. Free memory was 86.6MB in the beginning and 81.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 16:04:53,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 52.4MB. Free memory is still 34.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.78ms. Allocated memory is still 52.4MB. Free memory was 27.7MB in the beginning and 24.7MB in the end (delta: 3.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.99ms. Allocated memory was 52.4MB in the beginning and 65.0MB in the end (delta: 12.6MB). Free memory was 24.7MB in the beginning and 46.5MB in the end (delta: -21.8MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. * RCFGBuilder took 523.58ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 40.6MB in the end (delta: 5.7MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * TraceAbstraction took 63317.76ms. Allocated memory was 65.0MB in the beginning and 142.6MB in the end (delta: 77.6MB). Free memory was 40.0MB in the beginning and 86.6MB in the end (delta: -46.5MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Witness Printer took 76.01ms. Allocated memory is still 142.6MB. Free memory was 86.6MB in the beginning and 81.3MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 616]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L599] const int len = 5; VAL [len=5] [L600] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, new_head={-1:0}] [L588] new_head->next = head VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, new_head={-1:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, new_head={-1:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, new_head={-2:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, new_head={-2:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, new_head={-2:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, new_head={-3:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, new_head={-3:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, new_head={-3:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, new_head={-4:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, new_head={-4:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, new_head={-4:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L585] new_head->data_0 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L586] new_head->data_1 = 0 VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, new_head={-5:0}] [L588] new_head->next = head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L590] COND TRUE \read(head) VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, new_head={-5:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L580] COND FALSE !(len > 0) VAL [\old(len)=5, head={-5:0}, len=0, new_head={-5:0}] [L596] return head; VAL [\old(len)=5, \result={-5:0}, head={-5:0}, len=0, new_head={-5:0}] [L600] RET, EXPR dll_create(len) VAL [dll_create(len)={-5:0}, len=5] [L600] DLL head = dll_create(len); [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next [L602] EXPR head->data_0 VAL [head={-5:0}, head->data_0=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, len=5] [L602] EXPR head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] EXPR head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=0, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] reach_error() VAL [head={-5:0}, len=5] - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 605]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 608]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 609]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 612]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 598]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 589]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 591]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 109 locations, 35 error locations. Started 1 CEGAR loops. OverallTime: 63182.43ms, OverallIterations: 18, TraceHistogramMax: 5, EmptinessCheckTime: 30.74ms, AutomataDifference: 12400.57ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 15.08ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1515 SdHoareTripleChecker+Valid, 5642.07ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1515 mSDsluCounter, 540 SdHoareTripleChecker+Invalid, 4562.34ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1623 IncrementalHoareTripleChecker+Unchecked, 6502 mSDsCounter, 252 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11782 IncrementalHoareTripleChecker+Invalid, 13657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 252 mSolverCounterUnsat, 88 mSDtfsCounter, 11782 mSolverCounterSat, 70.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1418 GetRequests, 1116 SyntacticMatches, 17 SemanticMatches, 285 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 45157.11ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=13, InterpolantAutomatonStates: 171, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 98.32ms AutomataMinimizationTime, 17 MinimizatonAttempts, 199 StatesRemovedByMinimization, 17 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 178.48ms SsaConstructionTime, 734.26ms SatisfiabilityAnalysisTime, 46435.74ms InterpolantComputationTime, 1464 NumberOfCodeBlocks, 1464 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1903 ConstructedInterpolants, 111 QuantifiedInterpolants, 11061 SizeOfPredicates, 62 NumberOfNonLiveVariables, 3155 ConjunctsInSsa, 158 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 1482/2087 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! [2021-08-30 16:04:54,029 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...