./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_prepend_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_prepend_equal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 85f309ef7120c25bf3b7104ad3a9bfa2e1a59886 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-25 08:53:38,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:53:38,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:53:38,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:53:38,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:53:38,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:53:38,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:53:38,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:53:38,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:53:38,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:53:38,065 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:53:38,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:53:38,066 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:53:38,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:53:38,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:53:38,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:53:38,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:53:38,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:53:38,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:53:38,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:53:38,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:53:38,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:53:38,085 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:53:38,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:53:38,089 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:53:38,089 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:53:38,090 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:53:38,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:53:38,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:53:38,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:53:38,092 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:53:38,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:53:38,094 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:53:38,094 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:53:38,095 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:53:38,095 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:53:38,096 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:53:38,096 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:53:38,096 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:53:38,097 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:53:38,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:53:38,098 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:53:38,121 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:53:38,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:53:38,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:53:38,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:53:38,122 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:53:38,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:53:38,123 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:53:38,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:53:38,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:53:38,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:53:38,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:53:38,124 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:53:38,124 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:53:38,124 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:53:38,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:53:38,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:53:38,124 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:53:38,125 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:53:38,125 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:53:38,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:53:38,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:53:38,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:53:38,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:53:38,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:53:38,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:53:38,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:53:38,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:53:38,126 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:53:38,126 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:53:38,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:53:38,127 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f309ef7120c25bf3b7104ad3a9bfa2e1a59886 [2019-11-25 08:53:38,294 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:53:38,306 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:53:38,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:53:38,311 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:53:38,311 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:53:38,312 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_prepend_equal.i [2019-11-25 08:53:38,367 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/data/fe8e6e28d/9f9699f8906d4504ae19786e20c75fa0/FLAGbe9e8340f [2019-11-25 08:53:38,804 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:53:38,804 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/sv-benchmarks/c/list-simple/sll2n_prepend_equal.i [2019-11-25 08:53:38,817 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/data/fe8e6e28d/9f9699f8906d4504ae19786e20c75fa0/FLAGbe9e8340f [2019-11-25 08:53:39,119 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/data/fe8e6e28d/9f9699f8906d4504ae19786e20c75fa0 [2019-11-25 08:53:39,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:53:39,124 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:53:39,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:39,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:53:39,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:53:39,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3567fc48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39, skipping insertion in model container [2019-11-25 08:53:39,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:53:39,188 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:53:39,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:39,568 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:53:39,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:53:39,701 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:53:39,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39 WrapperNode [2019-11-25 08:53:39,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:53:39,702 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:53:39,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:53:39,703 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:53:39,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... [2019-11-25 08:53:39,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:53:39,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:53:39,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:53:39,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:53:39,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/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 [2019-11-25 08:53:39,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:53:39,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:53:39,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:53:39,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:53:39,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:53:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-25 08:53:39,893 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-25 08:53:39,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-25 08:53:39,894 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-25 08:53:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2019-11-25 08:53:39,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:53:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:53:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:53:39,895 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:53:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:53:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:53:39,896 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:53:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:53:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:53:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:53:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:53:39,897 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:53:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:53:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:53:39,898 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:53:39,899 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:53:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:53:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:53:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:53:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:53:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:53:39,900 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:53:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:53:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:53:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:53:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:53:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:53:39,901 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:53:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:53:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:53:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:53:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:53:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:53:39,902 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:53:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:53:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:53:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:53:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:53:39,903 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:53:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:53:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:53:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:53:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:53:39,904 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:53:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:53:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:53:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:53:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:53:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:53:39,905 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:53:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:53:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:53:39,906 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-25 08:53:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:53:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:53:39,907 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:53:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:53:39,908 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:53:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:53:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:53:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:53:39,909 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:53:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:53:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:53:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:53:39,910 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:53:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:53:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:53:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:53:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:53:39,911 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:53:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:53:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:53:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:53:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:53:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:53:39,912 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:53:39,913 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:53:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:53:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:53:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:53:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:53:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:53:39,914 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:53:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:53:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:53:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:53:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:53:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:53:39,915 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:53:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:53:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:53:39,916 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:53:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:53:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:53:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-25 08:53:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-25 08:53:39,917 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:53:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:53:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:53:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-25 08:53:39,918 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-25 08:53:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:53:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:53:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2019-11-25 08:53:39,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:53:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:53:39,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-25 08:53:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:53:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:53:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:53:39,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:53:40,265 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-25 08:53:40,663 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:53:40,663 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-25 08:53:40,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:40 BoogieIcfgContainer [2019-11-25 08:53:40,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:53:40,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:53:40,665 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:53:40,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:53:40,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:53:39" (1/3) ... [2019-11-25 08:53:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a697074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:40, skipping insertion in model container [2019-11-25 08:53:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:53:39" (2/3) ... [2019-11-25 08:53:40,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a697074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:53:40, skipping insertion in model container [2019-11-25 08:53:40,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:53:40" (3/3) ... [2019-11-25 08:53:40,677 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_equal.i [2019-11-25 08:53:40,686 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:53:40,692 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 26 error locations. [2019-11-25 08:53:40,702 INFO L249 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2019-11-25 08:53:40,719 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:53:40,719 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:53:40,720 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:53:40,720 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:53:40,720 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:53:40,720 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:53:40,720 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:53:40,720 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:53:40,742 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2019-11-25 08:53:40,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:53:40,751 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:40,752 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:40,753 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:40,758 INFO L82 PathProgramCache]: Analyzing trace with hash 920380583, now seen corresponding path program 1 times [2019-11-25 08:53:40,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:40,769 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1599240450] [2019-11-25 08:53:40,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:41,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:53:41,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:41,073 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:53:41,073 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:41,083 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:41,083 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:53:41,083 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:53:41,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:41,092 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:41,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:41,102 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1599240450] [2019-11-25 08:53:41,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:41,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:53:41,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793166729] [2019-11-25 08:53:41,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:53:41,107 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:41,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:53:41,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:53:41,122 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2019-11-25 08:53:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:41,282 INFO L93 Difference]: Finished difference Result 87 states and 92 transitions. [2019-11-25 08:53:41,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:53:41,284 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-25 08:53:41,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:41,298 INFO L225 Difference]: With dead ends: 87 [2019-11-25 08:53:41,298 INFO L226 Difference]: Without dead ends: 80 [2019-11-25 08:53:41,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:53:41,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-25 08:53:41,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2019-11-25 08:53:41,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-11-25 08:53:41,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 83 transitions. [2019-11-25 08:53:41,362 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 83 transitions. Word has length 13 [2019-11-25 08:53:41,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:41,362 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 83 transitions. [2019-11-25 08:53:41,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:53:41,362 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 83 transitions. [2019-11-25 08:53:41,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:53:41,363 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:41,363 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:41,573 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:41,574 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:41,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:41,574 INFO L82 PathProgramCache]: Analyzing trace with hash 920380584, now seen corresponding path program 1 times [2019-11-25 08:53:41,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:41,575 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [278565969] [2019-11-25 08:53:41,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:41,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:53:41,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:41,817 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:53:41,818 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:41,826 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:41,827 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:53:41,827 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:53:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:41,840 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:41,895 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [278565969] [2019-11-25 08:53:41,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:41,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:53:41,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101500865] [2019-11-25 08:53:41,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:53:41,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:41,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:53:41,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:41,898 INFO L87 Difference]: Start difference. First operand 80 states and 83 transitions. Second operand 4 states. [2019-11-25 08:53:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:42,164 INFO L93 Difference]: Finished difference Result 78 states and 81 transitions. [2019-11-25 08:53:42,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:53:42,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-25 08:53:42,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:42,167 INFO L225 Difference]: With dead ends: 78 [2019-11-25 08:53:42,167 INFO L226 Difference]: Without dead ends: 78 [2019-11-25 08:53:42,168 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:53:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-11-25 08:53:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2019-11-25 08:53:42,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2019-11-25 08:53:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2019-11-25 08:53:42,183 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 13 [2019-11-25 08:53:42,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:42,184 INFO L462 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2019-11-25 08:53:42,187 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:53:42,188 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2019-11-25 08:53:42,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:53:42,189 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:42,189 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:42,389 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:42,390 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:42,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1484620751, now seen corresponding path program 1 times [2019-11-25 08:53:42,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:42,391 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [977671709] [2019-11-25 08:53:42,391 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:42,599 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:53:42,600 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:42,606 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:53:42,607 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:42,609 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:42,609 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:53:42,609 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:53:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:42,646 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:42,715 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [977671709] [2019-11-25 08:53:42,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:42,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:53:42,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308689590] [2019-11-25 08:53:42,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:53:42,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:42,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:53:42,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:53:42,717 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 6 states. [2019-11-25 08:53:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:43,006 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2019-11-25 08:53:43,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:53:43,006 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-25 08:53:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:43,009 INFO L225 Difference]: With dead ends: 82 [2019-11-25 08:53:43,009 INFO L226 Difference]: Without dead ends: 82 [2019-11-25 08:53:43,009 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:53:43,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-25 08:53:43,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2019-11-25 08:53:43,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-25 08:53:43,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-11-25 08:53:43,021 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 19 [2019-11-25 08:53:43,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:43,021 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2019-11-25 08:53:43,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:53:43,022 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2019-11-25 08:53:43,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:53:43,023 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:43,023 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:43,225 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:43,225 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:43,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:43,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1484620752, now seen corresponding path program 1 times [2019-11-25 08:53:43,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:43,226 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1812861218] [2019-11-25 08:53:43,226 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:43,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:43,422 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:53:43,424 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:43,436 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:53:43,437 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:43,449 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:43,449 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:53:43,449 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:53:43,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:43,517 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:43,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:43,795 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1812861218] [2019-11-25 08:53:43,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:43,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-25 08:53:43,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441276052] [2019-11-25 08:53:43,796 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:53:43,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:43,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:53:43,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:53:43,796 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 10 states. [2019-11-25 08:53:44,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:44,386 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2019-11-25 08:53:44,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:53:44,388 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-25 08:53:44,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:44,389 INFO L225 Difference]: With dead ends: 81 [2019-11-25 08:53:44,389 INFO L226 Difference]: Without dead ends: 81 [2019-11-25 08:53:44,390 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:53:44,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2019-11-25 08:53:44,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2019-11-25 08:53:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-11-25 08:53:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2019-11-25 08:53:44,397 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 19 [2019-11-25 08:53:44,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:44,397 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2019-11-25 08:53:44,397 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:53:44,398 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2019-11-25 08:53:44,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:53:44,398 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:44,399 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:44,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:44,601 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:44,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:44,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1500644626, now seen corresponding path program 1 times [2019-11-25 08:53:44,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:44,602 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1041715898] [2019-11-25 08:53:44,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:44,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:44,807 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:53:44,809 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:44,833 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:44,891 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1041715898] [2019-11-25 08:53:44,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:53:44,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-25 08:53:44,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474887238] [2019-11-25 08:53:44,892 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:53:44,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:44,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:53:44,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:53:44,893 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand 7 states. [2019-11-25 08:53:44,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:44,955 INFO L93 Difference]: Finished difference Result 85 states and 89 transitions. [2019-11-25 08:53:44,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:53:44,955 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-25 08:53:44,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:44,957 INFO L225 Difference]: With dead ends: 85 [2019-11-25 08:53:44,957 INFO L226 Difference]: Without dead ends: 82 [2019-11-25 08:53:44,957 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-25 08:53:44,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-11-25 08:53:44,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2019-11-25 08:53:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2019-11-25 08:53:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 80 transitions. [2019-11-25 08:53:44,971 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 80 transitions. Word has length 25 [2019-11-25 08:53:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:44,972 INFO L462 AbstractCegarLoop]: Abstraction has 77 states and 80 transitions. [2019-11-25 08:53:44,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:53:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 80 transitions. [2019-11-25 08:53:44,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:53:44,974 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:44,974 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2019-11-25 08:53:45,180 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:45,181 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:45,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1047432937, now seen corresponding path program 1 times [2019-11-25 08:53:45,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:45,182 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1255405472] [2019-11-25 08:53:45,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:45,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:53:45,418 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:53:45,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:45,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:53:45,477 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:53:45,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-25 08:53:45,619 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1255405472] [2019-11-25 08:53:45,619 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:53:45,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-25 08:53:45,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893400452] [2019-11-25 08:53:45,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:53:45,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:53:45,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:53:45,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:53:45,621 INFO L87 Difference]: Start difference. First operand 77 states and 80 transitions. Second operand 9 states. [2019-11-25 08:53:45,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:53:45,769 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2019-11-25 08:53:45,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:53:45,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-25 08:53:45,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:53:45,771 INFO L225 Difference]: With dead ends: 91 [2019-11-25 08:53:45,771 INFO L226 Difference]: Without dead ends: 88 [2019-11-25 08:53:45,772 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:53:45,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-25 08:53:45,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 83. [2019-11-25 08:53:45,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2019-11-25 08:53:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2019-11-25 08:53:45,785 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 38 [2019-11-25 08:53:45,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:53:45,785 INFO L462 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2019-11-25 08:53:45,786 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:53:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2019-11-25 08:53:45,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-25 08:53:45,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:53:45,788 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:53:45,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:45,991 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-25 08:53:45,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:53:45,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1256392078, now seen corresponding path program 2 times [2019-11-25 08:53:45,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:53:45,992 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [40310018] [2019-11-25 08:53:45,992 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:53:46,264 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-25 08:53:46,264 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66325162] [2019-11-25 08:53:46,264 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d8337a91-8b98-4c0c-bf7c-1c4a64704adb/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:53:46,461 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:53:46,461 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:53:46,465 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-25 08:53:46,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:53:46,475 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-25 08:53:46,475 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:46,492 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:46,492 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:53:46,495 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:53:46,796 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 28 [2019-11-25 08:53:46,797 INFO L343 Elim1Store]: treesize reduction 27, result has 65.8 percent of original size [2019-11-25 08:53:46,797 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 31 treesize of output 72 [2019-11-25 08:53:46,799 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:46,853 INFO L567 ElimStorePlain]: treesize reduction 17, result has 62.2 percent of original size [2019-11-25 08:53:46,854 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-25 08:53:46,854 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:28 [2019-11-25 08:53:47,177 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:53:47,177 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 72 [2019-11-25 08:53:47,178 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:53:47,258 INFO L567 ElimStorePlain]: treesize reduction 42, result has 44.0 percent of original size [2019-11-25 08:53:47,259 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-25 08:53:47,260 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:34, output treesize:33 [2019-11-25 08:53:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-25 08:53:47,309 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:54:06,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:54:06,279 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Alternating quantifiers not yet supported at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-25 08:54:06,282 INFO L168 Benchmark]: Toolchain (without parser) took 27158.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.8 MB). Free memory was 938.1 MB in the beginning and 1.0 GB in the end (delta: -103.6 MB). Peak memory consumption was 96.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:06,283 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:54:06,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 572.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -200.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:06,284 INFO L168 Benchmark]: Boogie Preprocessor took 120.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:06,284 INFO L168 Benchmark]: RCFGBuilder took 841.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:06,285 INFO L168 Benchmark]: TraceAbstraction took 25615.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.5 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:54:06,287 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 572.01 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.9 MB). Free memory was 938.1 MB in the beginning and 1.1 GB in the end (delta: -200.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 120.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 841.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 59.5 MB). Peak memory consumption was 59.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 25615.97 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 39.8 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 30.5 MB). Peak memory consumption was 70.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Alternating quantifiers not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Alternating quantifiers not yet supported: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...