./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/alternating_list-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/alternating_list-2.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 da856cb29218eae000c82400da3ef1c667e9f55c ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-26 03:58:17,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 03:58:17,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 03:58:17,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 03:58:17,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 03:58:17,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 03:58:17,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 03:58:17,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 03:58:17,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 03:58:17,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 03:58:17,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 03:58:17,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 03:58:17,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 03:58:17,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 03:58:17,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 03:58:17,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 03:58:17,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 03:58:17,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 03:58:17,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 03:58:17,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 03:58:17,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 03:58:17,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 03:58:17,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 03:58:17,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 03:58:17,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 03:58:17,258 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 03:58:17,258 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 03:58:17,259 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 03:58:17,260 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 03:58:17,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 03:58:17,261 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 03:58:17,262 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 03:58:17,263 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 03:58:17,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 03:58:17,266 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 03:58:17,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 03:58:17,267 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 03:58:17,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 03:58:17,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 03:58:17,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 03:58:17,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 03:58:17,275 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-26 03:58:17,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 03:58:17,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 03:58:17,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 03:58:17,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 03:58:17,305 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 03:58:17,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 03:58:17,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 03:58:17,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-26 03:58:17,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 03:58:17,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 03:58:17,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 03:58:17,307 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-26 03:58:17,307 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-26 03:58:17,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 03:58:17,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-26 03:58:17,308 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 03:58:17,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 03:58:17,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 03:58:17,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 03:58:17,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 03:58:17,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 03:58:17,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:58:17,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 03:58:17,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 03:58:17,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 03:58:17,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 03:58:17,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 03:58:17,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da856cb29218eae000c82400da3ef1c667e9f55c [2020-10-26 03:58:17,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 03:58:17,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 03:58:17,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 03:58:17,808 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 03:58:17,810 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 03:58:17,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/alternating_list-2.i [2020-10-26 03:58:17,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cd69fdd/7d7dc9198cad40999b101b521216f082/FLAGbeabbe2e0 [2020-10-26 03:58:18,580 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 03:58:18,581 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/alternating_list-2.i [2020-10-26 03:58:18,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cd69fdd/7d7dc9198cad40999b101b521216f082/FLAGbeabbe2e0 [2020-10-26 03:58:18,912 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2cd69fdd/7d7dc9198cad40999b101b521216f082 [2020-10-26 03:58:18,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 03:58:18,928 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-26 03:58:18,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 03:58:18,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 03:58:18,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 03:58:18,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:58:18" (1/1) ... [2020-10-26 03:58:18,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22710afb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:18, skipping insertion in model container [2020-10-26 03:58:18,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 03:58:18" (1/1) ... [2020-10-26 03:58:18,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 03:58:19,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 03:58:19,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:58:19,417 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 03:58:19,502 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 03:58:19,591 INFO L208 MainTranslator]: Completed translation [2020-10-26 03:58:19,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19 WrapperNode [2020-10-26 03:58:19,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 03:58:19,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 03:58:19,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 03:58:19,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 03:58:19,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,697 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... [2020-10-26 03:58:19,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 03:58:19,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 03:58:19,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 03:58:19,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 03:58:19,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 03:58:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 03:58:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 03:58:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 03:58:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-26 03:58:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-26 03:58:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-26 03:58:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-26 03:58:19,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-26 03:58:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-26 03:58:19,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 03:58:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 03:58:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 03:58:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-26 03:58:19,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-26 03:58:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 03:58:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 03:58:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 03:58:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-26 03:58:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-26 03:58:19,806 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-26 03:58:19,807 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-26 03:58:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-26 03:58:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-26 03:58:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-26 03:58:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-26 03:58:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-26 03:58:19,808 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-26 03:58:19,809 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-26 03:58:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-26 03:58:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-26 03:58:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-26 03:58:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-26 03:58:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-26 03:58:19,810 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-26 03:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-26 03:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-26 03:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-26 03:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-26 03:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-26 03:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-26 03:58:19,812 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-26 03:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-26 03:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-26 03:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-26 03:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-26 03:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-26 03:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-26 03:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 03:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-26 03:58:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-26 03:58:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-26 03:58:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-26 03:58:19,821 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-26 03:58:19,822 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-26 03:58:19,823 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-26 03:58:19,824 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-26 03:58:19,825 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-26 03:58:19,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 03:58:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 03:58:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 03:58:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 03:58:20,289 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-26 03:58:20,605 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 03:58:20,606 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 03:58:20,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:58:20 BoogieIcfgContainer [2020-10-26 03:58:20,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 03:58:20,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 03:58:20,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 03:58:20,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 03:58:20,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 03:58:18" (1/3) ... [2020-10-26 03:58:20,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b94a1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:58:20, skipping insertion in model container [2020-10-26 03:58:20,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 03:58:19" (2/3) ... [2020-10-26 03:58:20,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b94a1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 03:58:20, skipping insertion in model container [2020-10-26 03:58:20,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:58:20" (3/3) ... [2020-10-26 03:58:20,617 INFO L111 eAbstractionObserver]: Analyzing ICFG alternating_list-2.i [2020-10-26 03:58:20,628 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 03:58:20,634 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2020-10-26 03:58:20,647 INFO L253 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2020-10-26 03:58:20,668 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 03:58:20,669 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-26 03:58:20,669 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 03:58:20,669 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 03:58:20,669 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 03:58:20,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 03:58:20,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 03:58:20,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 03:58:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2020-10-26 03:58:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 03:58:20,697 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:20,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:20,699 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:20,706 INFO L82 PathProgramCache]: Analyzing trace with hash -463735565, now seen corresponding path program 1 times [2020-10-26 03:58:20,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:20,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097127545] [2020-10-26 03:58:20,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:20,986 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097127545] [2020-10-26 03:58:20,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:20,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 03:58:20,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369151606] [2020-10-26 03:58:20,993 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-26 03:58:20,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:21,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-26 03:58:21,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:58:21,013 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2020-10-26 03:58:21,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:21,208 INFO L93 Difference]: Finished difference Result 83 states and 90 transitions. [2020-10-26 03:58:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-26 03:58:21,210 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-26 03:58:21,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:21,219 INFO L225 Difference]: With dead ends: 83 [2020-10-26 03:58:21,219 INFO L226 Difference]: Without dead ends: 76 [2020-10-26 03:58:21,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-26 03:58:21,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-26 03:58:21,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-26 03:58:21,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-26 03:58:21,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2020-10-26 03:58:21,271 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 10 [2020-10-26 03:58:21,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:21,272 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2020-10-26 03:58:21,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-26 03:58:21,272 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2020-10-26 03:58:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:58:21,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:21,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:21,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 03:58:21,274 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:21,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1490936265, now seen corresponding path program 1 times [2020-10-26 03:58:21,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:21,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795445381] [2020-10-26 03:58:21,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:21,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:21,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795445381] [2020-10-26 03:58:21,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:21,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:58:21,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633224586] [2020-10-26 03:58:21,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:58:21,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:21,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:58:21,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:58:21,425 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand 5 states. [2020-10-26 03:58:21,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:21,679 INFO L93 Difference]: Finished difference Result 97 states and 105 transitions. [2020-10-26 03:58:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:58:21,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:58:21,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:21,682 INFO L225 Difference]: With dead ends: 97 [2020-10-26 03:58:21,682 INFO L226 Difference]: Without dead ends: 97 [2020-10-26 03:58:21,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-26 03:58:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 77. [2020-10-26 03:58:21,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-26 03:58:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2020-10-26 03:58:21,696 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 11 [2020-10-26 03:58:21,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:21,697 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2020-10-26 03:58:21,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:58:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2020-10-26 03:58:21,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 03:58:21,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:21,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:21,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 03:58:21,699 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:21,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1490936264, now seen corresponding path program 1 times [2020-10-26 03:58:21,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:21,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101801270] [2020-10-26 03:58:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:21,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:21,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101801270] [2020-10-26 03:58:21,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:21,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:58:21,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667864841] [2020-10-26 03:58:21,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:58:21,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:21,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:58:21,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:58:21,812 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand 5 states. [2020-10-26 03:58:22,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:22,048 INFO L93 Difference]: Finished difference Result 104 states and 115 transitions. [2020-10-26 03:58:22,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:58:22,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-26 03:58:22,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:22,052 INFO L225 Difference]: With dead ends: 104 [2020-10-26 03:58:22,052 INFO L226 Difference]: Without dead ends: 104 [2020-10-26 03:58:22,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:22,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-26 03:58:22,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 93. [2020-10-26 03:58:22,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-26 03:58:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-10-26 03:58:22,062 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 11 [2020-10-26 03:58:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:22,063 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-10-26 03:58:22,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:58:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-10-26 03:58:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 03:58:22,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:22,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:22,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 03:58:22,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:22,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:22,069 INFO L82 PathProgramCache]: Analyzing trace with hash -574680799, now seen corresponding path program 1 times [2020-10-26 03:58:22,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:22,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654310494] [2020-10-26 03:58:22,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:22,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:22,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654310494] [2020-10-26 03:58:22,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:22,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:58:22,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456432761] [2020-10-26 03:58:22,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:58:22,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:22,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:58:22,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:58:22,173 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 5 states. [2020-10-26 03:58:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:22,374 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-10-26 03:58:22,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 03:58:22,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-26 03:58:22,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:22,377 INFO L225 Difference]: With dead ends: 100 [2020-10-26 03:58:22,377 INFO L226 Difference]: Without dead ends: 100 [2020-10-26 03:58:22,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:22,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-26 03:58:22,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 94. [2020-10-26 03:58:22,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-26 03:58:22,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2020-10-26 03:58:22,394 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 19 [2020-10-26 03:58:22,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:22,397 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2020-10-26 03:58:22,397 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:58:22,397 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2020-10-26 03:58:22,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:58:22,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:22,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:22,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 03:58:22,400 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:22,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:22,400 INFO L82 PathProgramCache]: Analyzing trace with hash 633071481, now seen corresponding path program 1 times [2020-10-26 03:58:22,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:22,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484809650] [2020-10-26 03:58:22,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:22,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:22,516 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484809650] [2020-10-26 03:58:22,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:22,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:58:22,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219845171] [2020-10-26 03:58:22,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 03:58:22,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:22,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 03:58:22,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:58:22,523 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand 4 states. [2020-10-26 03:58:22,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:22,695 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2020-10-26 03:58:22,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 03:58:22,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-26 03:58:22,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:22,697 INFO L225 Difference]: With dead ends: 143 [2020-10-26 03:58:22,697 INFO L226 Difference]: Without dead ends: 143 [2020-10-26 03:58:22,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 03:58:22,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-26 03:58:22,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 103. [2020-10-26 03:58:22,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-26 03:58:22,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 119 transitions. [2020-10-26 03:58:22,707 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 119 transitions. Word has length 20 [2020-10-26 03:58:22,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:22,708 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 119 transitions. [2020-10-26 03:58:22,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 03:58:22,708 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 119 transitions. [2020-10-26 03:58:22,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:58:22,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:22,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:22,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 03:58:22,710 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:22,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:22,711 INFO L82 PathProgramCache]: Analyzing trace with hash 337246851, now seen corresponding path program 1 times [2020-10-26 03:58:22,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:22,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798626719] [2020-10-26 03:58:22,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:22,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:22,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798626719] [2020-10-26 03:58:22,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:22,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:58:22,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112297755] [2020-10-26 03:58:22,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:58:22,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:22,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:58:22,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:58:22,856 INFO L87 Difference]: Start difference. First operand 103 states and 119 transitions. Second operand 7 states. [2020-10-26 03:58:23,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:23,187 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2020-10-26 03:58:23,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:58:23,188 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-26 03:58:23,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:23,189 INFO L225 Difference]: With dead ends: 144 [2020-10-26 03:58:23,190 INFO L226 Difference]: Without dead ends: 144 [2020-10-26 03:58:23,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:58:23,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-26 03:58:23,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 106. [2020-10-26 03:58:23,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-26 03:58:23,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions. [2020-10-26 03:58:23,208 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 20 [2020-10-26 03:58:23,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:23,209 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 122 transitions. [2020-10-26 03:58:23,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:58:23,209 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 122 transitions. [2020-10-26 03:58:23,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-26 03:58:23,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:23,210 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:23,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 03:58:23,210 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:23,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:23,215 INFO L82 PathProgramCache]: Analyzing trace with hash -635189694, now seen corresponding path program 1 times [2020-10-26 03:58:23,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:23,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069088276] [2020-10-26 03:58:23,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:23,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:23,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:23,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069088276] [2020-10-26 03:58:23,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:23,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:58:23,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182679878] [2020-10-26 03:58:23,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:58:23,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:23,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:58:23,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:23,327 INFO L87 Difference]: Start difference. First operand 106 states and 122 transitions. Second operand 6 states. [2020-10-26 03:58:23,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:23,579 INFO L93 Difference]: Finished difference Result 115 states and 130 transitions. [2020-10-26 03:58:23,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:58:23,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-26 03:58:23,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:23,581 INFO L225 Difference]: With dead ends: 115 [2020-10-26 03:58:23,581 INFO L226 Difference]: Without dead ends: 115 [2020-10-26 03:58:23,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:58:23,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-26 03:58:23,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 108. [2020-10-26 03:58:23,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-10-26 03:58:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2020-10-26 03:58:23,588 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 20 [2020-10-26 03:58:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:23,588 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2020-10-26 03:58:23,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:58:23,588 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2020-10-26 03:58:23,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:58:23,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:23,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:23,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 03:58:23,590 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:23,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:23,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1782539078, now seen corresponding path program 1 times [2020-10-26 03:58:23,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:23,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072495427] [2020-10-26 03:58:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:23,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:23,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072495427] [2020-10-26 03:58:23,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:23,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:58:23,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814608512] [2020-10-26 03:58:23,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:58:23,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:23,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:58:23,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:23,704 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 6 states. [2020-10-26 03:58:23,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:23,868 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2020-10-26 03:58:23,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:58:23,868 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-26 03:58:23,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:23,870 INFO L225 Difference]: With dead ends: 122 [2020-10-26 03:58:23,870 INFO L226 Difference]: Without dead ends: 118 [2020-10-26 03:58:23,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 03:58:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-26 03:58:23,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 111. [2020-10-26 03:58:23,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-26 03:58:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 127 transitions. [2020-10-26 03:58:23,882 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 127 transitions. Word has length 21 [2020-10-26 03:58:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:23,882 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 127 transitions. [2020-10-26 03:58:23,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:58:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 127 transitions. [2020-10-26 03:58:23,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:58:23,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:23,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:23,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 03:58:23,884 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1783956134, now seen corresponding path program 1 times [2020-10-26 03:58:23,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:23,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447316917] [2020-10-26 03:58:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:23,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:23,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:23,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447316917] [2020-10-26 03:58:23,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:23,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 03:58:23,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917738804] [2020-10-26 03:58:23,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 03:58:23,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:23,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 03:58:23,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:23,967 INFO L87 Difference]: Start difference. First operand 111 states and 127 transitions. Second operand 6 states. [2020-10-26 03:58:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:24,247 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2020-10-26 03:58:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:58:24,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-26 03:58:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:24,249 INFO L225 Difference]: With dead ends: 119 [2020-10-26 03:58:24,249 INFO L226 Difference]: Without dead ends: 119 [2020-10-26 03:58:24,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:58:24,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-26 03:58:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 112. [2020-10-26 03:58:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-26 03:58:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2020-10-26 03:58:24,260 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 21 [2020-10-26 03:58:24,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:24,261 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2020-10-26 03:58:24,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 03:58:24,261 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2020-10-26 03:58:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:58:24,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:24,262 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:24,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 03:58:24,263 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:24,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:24,264 INFO L82 PathProgramCache]: Analyzing trace with hash 119047172, now seen corresponding path program 1 times [2020-10-26 03:58:24,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:24,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982217733] [2020-10-26 03:58:24,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:24,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:24,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982217733] [2020-10-26 03:58:24,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:24,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:58:24,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012619265] [2020-10-26 03:58:24,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:58:24,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:24,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:58:24,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:58:24,395 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand 7 states. [2020-10-26 03:58:24,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:24,735 INFO L93 Difference]: Finished difference Result 116 states and 132 transitions. [2020-10-26 03:58:24,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 03:58:24,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:58:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:24,737 INFO L225 Difference]: With dead ends: 116 [2020-10-26 03:58:24,737 INFO L226 Difference]: Without dead ends: 116 [2020-10-26 03:58:24,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-26 03:58:24,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-26 03:58:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 109. [2020-10-26 03:58:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-26 03:58:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-10-26 03:58:24,743 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 21 [2020-10-26 03:58:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:24,743 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-10-26 03:58:24,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:58:24,744 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-10-26 03:58:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-26 03:58:24,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:24,753 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:24,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 03:58:24,753 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:24,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:24,755 INFO L82 PathProgramCache]: Analyzing trace with hash 119047173, now seen corresponding path program 1 times [2020-10-26 03:58:24,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:24,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942363964] [2020-10-26 03:58:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:24,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:24,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942363964] [2020-10-26 03:58:24,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:24,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 03:58:24,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128217897] [2020-10-26 03:58:24,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:58:24,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:24,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:58:24,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:58:24,884 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 7 states. [2020-10-26 03:58:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:25,301 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-10-26 03:58:25,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 03:58:25,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-10-26 03:58:25,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:25,307 INFO L225 Difference]: With dead ends: 129 [2020-10-26 03:58:25,308 INFO L226 Difference]: Without dead ends: 129 [2020-10-26 03:58:25,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-26 03:58:25,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-26 03:58:25,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 97. [2020-10-26 03:58:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-26 03:58:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 111 transitions. [2020-10-26 03:58:25,313 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 111 transitions. Word has length 21 [2020-10-26 03:58:25,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:25,314 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 111 transitions. [2020-10-26 03:58:25,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:58:25,314 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 111 transitions. [2020-10-26 03:58:25,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-26 03:58:25,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:25,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:25,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 03:58:25,316 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:25,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:25,317 INFO L82 PathProgramCache]: Analyzing trace with hash -531934524, now seen corresponding path program 1 times [2020-10-26 03:58:25,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:25,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490223376] [2020-10-26 03:58:25,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:25,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:25,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:25,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490223376] [2020-10-26 03:58:25,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:25,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 03:58:25,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431019635] [2020-10-26 03:58:25,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 03:58:25,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:25,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 03:58:25,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-26 03:58:25,379 INFO L87 Difference]: Start difference. First operand 97 states and 111 transitions. Second operand 5 states. [2020-10-26 03:58:25,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:25,548 INFO L93 Difference]: Finished difference Result 96 states and 110 transitions. [2020-10-26 03:58:25,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 03:58:25,549 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-26 03:58:25,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:25,550 INFO L225 Difference]: With dead ends: 96 [2020-10-26 03:58:25,550 INFO L226 Difference]: Without dead ends: 96 [2020-10-26 03:58:25,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 03:58:25,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-26 03:58:25,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-26 03:58:25,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-26 03:58:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-10-26 03:58:25,557 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 22 [2020-10-26 03:58:25,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:25,558 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-10-26 03:58:25,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 03:58:25,559 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-10-26 03:58:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-26 03:58:25,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:25,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:25,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 03:58:25,565 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:25,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:25,566 INFO L82 PathProgramCache]: Analyzing trace with hash 689899095, now seen corresponding path program 1 times [2020-10-26 03:58:25,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:25,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791094739] [2020-10-26 03:58:25,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:25,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 03:58:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 03:58:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 03:58:25,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791094739] [2020-10-26 03:58:25,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 03:58:25,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 03:58:25,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820515203] [2020-10-26 03:58:25,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 03:58:25,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 03:58:25,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 03:58:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-26 03:58:25,714 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 7 states. [2020-10-26 03:58:26,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 03:58:26,005 INFO L93 Difference]: Finished difference Result 110 states and 122 transitions. [2020-10-26 03:58:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 03:58:26,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-26 03:58:26,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 03:58:26,008 INFO L225 Difference]: With dead ends: 110 [2020-10-26 03:58:26,008 INFO L226 Difference]: Without dead ends: 103 [2020-10-26 03:58:26,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-26 03:58:26,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-26 03:58:26,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2020-10-26 03:58:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-26 03:58:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2020-10-26 03:58:26,013 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 23 [2020-10-26 03:58:26,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 03:58:26,014 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2020-10-26 03:58:26,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 03:58:26,014 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2020-10-26 03:58:26,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-26 03:58:26,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 03:58:26,015 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 03:58:26,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 03:58:26,016 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr25ASSERT_VIOLATIONMEMORY_FREE, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr23ASSERT_VIOLATIONMEMORY_FREE, mainErr27ASSERT_VIOLATIONMEMORY_FREE, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr22ASSERT_VIOLATIONMEMORY_FREE, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, mainErr24ASSERT_VIOLATIONMEMORY_FREE, mainErr26ASSERT_VIOLATIONMEMORY_FREE]=== [2020-10-26 03:58:26,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 03:58:26,017 INFO L82 PathProgramCache]: Analyzing trace with hash -514536618, now seen corresponding path program 1 times [2020-10-26 03:58:26,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 03:58:26,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614102842] [2020-10-26 03:58:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 03:58:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:58:26,041 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:58:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 03:58:26,059 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-26 03:58:26,097 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-26 03:58:26,098 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 03:58:26,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 03:58:26,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 03:58:26 BoogieIcfgContainer [2020-10-26 03:58:26,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 03:58:26,169 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 03:58:26,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 03:58:26,170 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 03:58:26,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 03:58:20" (3/4) ... [2020-10-26 03:58:26,173 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-26 03:58:26,242 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 03:58:26,244 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 03:58:26,248 INFO L168 Benchmark]: Toolchain (without parser) took 7323.71 ms. Allocated memory was 41.9 MB in the beginning and 123.7 MB in the end (delta: 81.8 MB). Free memory was 26.6 MB in the beginning and 70.2 MB in the end (delta: -43.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 16.1 GB. [2020-10-26 03:58:26,249 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 41.9 MB. Free memory was 28.4 MB in the beginning and 28.4 MB in the end (delta: 22.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 03:58:26,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.74 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 31.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2020-10-26 03:58:26,252 INFO L168 Benchmark]: Boogie Preprocessor took 119.63 ms. Allocated memory is still 52.4 MB. Free memory was 31.4 MB in the beginning and 28.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 03:58:26,254 INFO L168 Benchmark]: RCFGBuilder took 894.13 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 30.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-10-26 03:58:26,255 INFO L168 Benchmark]: TraceAbstraction took 5559.29 ms. Allocated memory was 52.4 MB in the beginning and 123.7 MB in the end (delta: 71.3 MB). Free memory was 30.4 MB in the beginning and 73.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. [2020-10-26 03:58:26,255 INFO L168 Benchmark]: Witness Printer took 74.70 ms. Allocated memory is still 123.7 MB. Free memory was 73.3 MB in the beginning and 70.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 03:58:26,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 41.9 MB. Free memory was 28.4 MB in the beginning and 28.4 MB in the end (delta: 22.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 652.74 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 25.9 MB in the beginning and 31.4 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 119.63 ms. Allocated memory is still 52.4 MB. Free memory was 31.4 MB in the beginning and 28.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 894.13 ms. Allocated memory is still 52.4 MB. Free memory was 28.5 MB in the beginning and 30.7 MB in the end (delta: -2.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5559.29 ms. Allocated memory was 52.4 MB in the beginning and 123.7 MB in the end (delta: 71.3 MB). Free memory was 30.4 MB in the beginning and 73.3 MB in the end (delta: -42.9 MB). Peak memory consumption was 28.7 MB. Max. memory is 16.1 GB. * Witness Printer took 74.70 ms. Allocated memory is still 123.7 MB. Free memory was 73.3 MB in the beginning and 70.2 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L534] COND FALSE !(a == 0) VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L535] List t; [L536] List p = a; VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L537] COND TRUE __VERIFIER_nondet_int() [L538] COND TRUE \read(flag) VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L539] p->h = 2 VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L540] flag = 0 VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={1:0}, p={1:0}] [L545] t = (List) malloc(sizeof(struct node)) VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, t={-1:0}] [L546] COND FALSE !(t == 0) VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, t={-1:0}] [L547] p->n = t VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={-1:0}] [L548] EXPR p->n VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->n={-1:0}, t={-1:0}] [L548] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L550] p->h = 3 VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={1:0}, p={-1:0}, t={-1:0}] [L551] p = a [L552] flag = 1 VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={-1:0}] [L553] EXPR p->h VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, p->h=2, t={-1:0}] [L553] COND TRUE p->h != 3 [L554] COND TRUE \read(flag) [L555] flag = 0 VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, malloc(sizeof(struct node))={1:0}, p={1:0}, t={-1:0}] [L556] EXPR p->h VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, p->h=2, t={-1:0}] [L556] COND TRUE p->h != 1 [L573] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "alternating_list-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 102 locations, 30 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 14, TraceHistogramMax: 2, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 754 SDtfs, 1007 SDslu, 1083 SDs, 0 SdLazy, 2114 SolverSat, 147 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 189 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 270 NumberOfCodeBlocks, 270 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 227 ConstructedInterpolants, 0 QuantifiedInterpolants, 18775 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...