./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/sll2n_append_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_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/sll2n_append_equal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 1c66d86f2cb93b92fe110cb1d9c29158a00f0747 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:47:11,926 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:47:11,928 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:47:11,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:47:11,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:47:11,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:47:11,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:47:11,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:47:11,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:47:11,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:47:11,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:47:11,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:47:11,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:47:11,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:47:11,959 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:47:11,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:47:11,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:47:11,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:47:11,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:47:11,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:47:11,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:47:11,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:47:11,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:47:11,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:47:11,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:47:11,989 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:47:11,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:47:11,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:47:11,992 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:47:11,993 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:47:11,994 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:47:11,995 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:47:11,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:47:11,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:47:11,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:47:11,999 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:47:12,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:47:12,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:47:12,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:47:12,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:47:12,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:47:12,005 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-25 08:47:12,024 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:47:12,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:47:12,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:47:12,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:47:12,026 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:47:12,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:47:12,027 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-25 08:47:12,027 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:47:12,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:47:12,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-25 08:47:12,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:47:12,029 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-25 08:47:12,029 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-25 08:47:12,029 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-25 08:47:12,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-25 08:47:12,030 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-25 08:47:12,030 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-25 08:47:12,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-25 08:47:12,031 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-25 08:47:12,031 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:47:12,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:47:12,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:47:12,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-25 08:47:12,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-25 08:47:12,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-25 08:47:12,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:47:12,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-25 08:47:12,033 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-25 08:47:12,033 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-25 08:47:12,033 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-25 08:47:12,034 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_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 -> 1c66d86f2cb93b92fe110cb1d9c29158a00f0747 [2019-11-25 08:47:12,250 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:47:12,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:47:12,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:47:12,269 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:47:12,269 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:47:12,270 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/../../sv-benchmarks/c/list-simple/sll2n_append_equal.i [2019-11-25 08:47:12,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/data/f52e4487b/9e65b89c91324e1d81c0911e30294b0c/FLAG9460982c5 [2019-11-25 08:47:12,842 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:47:12,843 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/sv-benchmarks/c/list-simple/sll2n_append_equal.i [2019-11-25 08:47:12,857 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/data/f52e4487b/9e65b89c91324e1d81c0911e30294b0c/FLAG9460982c5 [2019-11-25 08:47:13,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/bin/uautomizer/data/f52e4487b/9e65b89c91324e1d81c0911e30294b0c [2019-11-25 08:47:13,137 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:47:13,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-25 08:47:13,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:13,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:47:13,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:47:13,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610cc436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13, skipping insertion in model container [2019-11-25 08:47:13,147 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:47:13,200 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:47:13,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:13,583 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:47:13,662 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:47:13,728 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:47:13,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13 WrapperNode [2019-11-25 08:47:13,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:47:13,729 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:47:13,730 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:47:13,730 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:47:13,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... [2019-11-25 08:47:13,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:47:13,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:47:13,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:47:13,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:47:13,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:13,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-25 08:47:13,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:47:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:47:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-25 08:47:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-25 08:47:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-25 08:47:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-25 08:47:13,883 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-25 08:47:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-25 08:47:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-11-25 08:47:13,884 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-25 08:47:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-25 08:47:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-25 08:47:13,884 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-25 08:47:13,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-25 08:47:13,886 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-25 08:47:13,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-25 08:47:13,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-25 08:47:13,889 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-25 08:47:13,890 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-25 08:47:13,891 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-25 08:47:13,892 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-25 08:47:13,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-25 08:47:13,894 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-25 08:47:13,895 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-25 08:47:13,896 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-25 08:47:13,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-25 08:47:13,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-25 08:47:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-25 08:47:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-25 08:47:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:47:13,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2019-11-25 08:47:14,286 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-25 08:47:14,754 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:47:14,754 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-25 08:47:14,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:14 BoogieIcfgContainer [2019-11-25 08:47:14,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:47:14,756 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-25 08:47:14,756 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-25 08:47:14,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-25 08:47:14,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:47:13" (1/3) ... [2019-11-25 08:47:14,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b84226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:14, skipping insertion in model container [2019-11-25 08:47:14,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:47:13" (2/3) ... [2019-11-25 08:47:14,760 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b84226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:47:14, skipping insertion in model container [2019-11-25 08:47:14,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:47:14" (3/3) ... [2019-11-25 08:47:14,762 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_append_equal.i [2019-11-25 08:47:14,771 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-25 08:47:14,778 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 32 error locations. [2019-11-25 08:47:14,792 INFO L249 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2019-11-25 08:47:14,812 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-25 08:47:14,812 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-25 08:47:14,812 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-25 08:47:14,812 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:47:14,813 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:47:14,813 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-25 08:47:14,813 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:47:14,813 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-25 08:47:14,839 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2019-11-25 08:47:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:47:14,847 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:14,847 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:14,848 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:14,853 INFO L82 PathProgramCache]: Analyzing trace with hash 99636163, now seen corresponding path program 1 times [2019-11-25 08:47:14,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:14,863 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1752266507] [2019-11-25 08:47:14,863 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:15,095 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-25 08:47:15,100 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:15,167 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 08:47:15,167 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,174 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,174 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,174 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:47:15,183 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 08:47:15,183 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:15,204 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 08:47:15,205 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1752266507] [2019-11-25 08:47:15,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:15,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-25 08:47:15,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369699295] [2019-11-25 08:47:15,211 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-25 08:47:15,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:15,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:47:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:47:15,229 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 3 states. [2019-11-25 08:47:15,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:15,438 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2019-11-25 08:47:15,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:15,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-25 08:47:15,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:15,451 INFO L225 Difference]: With dead ends: 99 [2019-11-25 08:47:15,451 INFO L226 Difference]: Without dead ends: 92 [2019-11-25 08:47:15,453 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 08:47:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-11-25 08:47:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2019-11-25 08:47:15,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2019-11-25 08:47:15,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2019-11-25 08:47:15,495 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 13 [2019-11-25 08:47:15,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:15,496 INFO L462 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2019-11-25 08:47:15,496 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-25 08:47:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2019-11-25 08:47:15,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-25 08:47:15,497 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:15,497 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-25 08:47:15,699 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:15,700 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 99636164, now seen corresponding path program 1 times [2019-11-25 08:47:15,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:15,701 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1365960546] [2019-11-25 08:47:15,701 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:15,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:15,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:47:15,928 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:15,942 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 08:47:15,943 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,951 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:15,951 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:15,951 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:47:15,964 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 08:47:15,965 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:16,028 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 08:47:16,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1365960546] [2019-11-25 08:47:16,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:16,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-25 08:47:16,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965667986] [2019-11-25 08:47:16,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-25 08:47:16,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:16,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-25 08:47:16,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-25 08:47:16,031 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 4 states. [2019-11-25 08:47:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:16,434 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2019-11-25 08:47:16,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:47:16,436 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-25 08:47:16,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:16,438 INFO L225 Difference]: With dead ends: 90 [2019-11-25 08:47:16,438 INFO L226 Difference]: Without dead ends: 90 [2019-11-25 08:47:16,439 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 08:47:16,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-25 08:47:16,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2019-11-25 08:47:16,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2019-11-25 08:47:16,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2019-11-25 08:47:16,450 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 13 [2019-11-25 08:47:16,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:16,450 INFO L462 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2019-11-25 08:47:16,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-25 08:47:16,451 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2019-11-25 08:47:16,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:47:16,452 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:16,452 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 08:47:16,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:16,655 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:16,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:16,656 INFO L82 PathProgramCache]: Analyzing trace with hash 628201223, now seen corresponding path program 1 times [2019-11-25 08:47:16,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:16,657 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1342039468] [2019-11-25 08:47:16,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:16,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-25 08:47:16,902 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:16,915 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 08:47:16,916 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:16,923 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:16,923 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:16,923 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:47:16,979 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 08:47:16,979 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:17,069 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 08:47:17,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1342039468] [2019-11-25 08:47:17,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:17,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-25 08:47:17,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956742628] [2019-11-25 08:47:17,071 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-25 08:47:17,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:17,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-25 08:47:17,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-25 08:47:17,072 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 6 states. [2019-11-25 08:47:17,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:17,550 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2019-11-25 08:47:17,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:17,551 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-25 08:47:17,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:17,554 INFO L225 Difference]: With dead ends: 94 [2019-11-25 08:47:17,555 INFO L226 Difference]: Without dead ends: 94 [2019-11-25 08:47:17,555 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 08:47:17,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-25 08:47:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2019-11-25 08:47:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-25 08:47:17,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2019-11-25 08:47:17,579 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 19 [2019-11-25 08:47:17,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:17,580 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2019-11-25 08:47:17,580 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-25 08:47:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2019-11-25 08:47:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-25 08:47:17,583 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:17,583 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 08:47:17,785 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:17,786 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:17,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:17,786 INFO L82 PathProgramCache]: Analyzing trace with hash 628201224, now seen corresponding path program 1 times [2019-11-25 08:47:17,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:17,787 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [438398477] [2019-11-25 08:47:17,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:18,018 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-25 08:47:18,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:18,034 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 08:47:18,034 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:18,046 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:18,046 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:18,047 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-25 08:47:18,121 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 08:47:18,121 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:18,494 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 08:47:18,494 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [438398477] [2019-11-25 08:47:18,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:18,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-25 08:47:18,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754479948] [2019-11-25 08:47:18,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-25 08:47:18,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:18,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-25 08:47:18,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-25 08:47:18,496 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 10 states. [2019-11-25 08:47:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:19,208 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2019-11-25 08:47:19,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:19,217 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-25 08:47:19,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:19,219 INFO L225 Difference]: With dead ends: 93 [2019-11-25 08:47:19,219 INFO L226 Difference]: Without dead ends: 93 [2019-11-25 08:47:19,220 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-25 08:47:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-11-25 08:47:19,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 88. [2019-11-25 08:47:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-25 08:47:19,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2019-11-25 08:47:19,227 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 19 [2019-11-25 08:47:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:19,228 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2019-11-25 08:47:19,228 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-25 08:47:19,228 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2019-11-25 08:47:19,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-25 08:47:19,229 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:19,229 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 08:47:19,429 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:19,430 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:19,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:19,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1468968430, now seen corresponding path program 1 times [2019-11-25 08:47:19,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:19,431 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1052441868] [2019-11-25 08:47:19,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:19,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-25 08:47:19,641 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:19,667 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 08:47:19,681 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:19,742 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 08:47:19,742 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1052441868] [2019-11-25 08:47:19,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:47:19,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-25 08:47:19,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061918957] [2019-11-25 08:47:19,743 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-25 08:47:19,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:19,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-25 08:47:19,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-25 08:47:19,744 INFO L87 Difference]: Start difference. First operand 88 states and 93 transitions. Second operand 7 states. [2019-11-25 08:47:19,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:19,817 INFO L93 Difference]: Finished difference Result 97 states and 103 transitions. [2019-11-25 08:47:19,818 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-25 08:47:19,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-25 08:47:19,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:19,819 INFO L225 Difference]: With dead ends: 97 [2019-11-25 08:47:19,819 INFO L226 Difference]: Without dead ends: 94 [2019-11-25 08:47:19,819 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 08:47:19,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-11-25 08:47:19,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2019-11-25 08:47:19,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-11-25 08:47:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2019-11-25 08:47:19,834 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 25 [2019-11-25 08:47:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:19,835 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2019-11-25 08:47:19,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-25 08:47:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2019-11-25 08:47:19,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-25 08:47:19,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:19,837 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 08:47:20,047 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:20,048 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:20,048 INFO L82 PathProgramCache]: Analyzing trace with hash 922971385, now seen corresponding path program 1 times [2019-11-25 08:47:20,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:20,049 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [144190151] [2019-11-25 08:47:20,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:20,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:47:20,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-25 08:47:20,273 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:20,315 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 08:47:20,315 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:20,456 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 08:47:20,457 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [144190151] [2019-11-25 08:47:20,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-25 08:47:20,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-25 08:47:20,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623503303] [2019-11-25 08:47:20,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-25 08:47:20,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-25 08:47:20,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-25 08:47:20,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-25 08:47:20,458 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 9 states. [2019-11-25 08:47:20,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:47:20,619 INFO L93 Difference]: Finished difference Result 103 states and 110 transitions. [2019-11-25 08:47:20,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-25 08:47:20,620 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-25 08:47:20,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-25 08:47:20,622 INFO L225 Difference]: With dead ends: 103 [2019-11-25 08:47:20,622 INFO L226 Difference]: Without dead ends: 100 [2019-11-25 08:47:20,622 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 08:47:20,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-25 08:47:20,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 95. [2019-11-25 08:47:20,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-25 08:47:20,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 101 transitions. [2019-11-25 08:47:20,640 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 101 transitions. Word has length 38 [2019-11-25 08:47:20,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-25 08:47:20,641 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 101 transitions. [2019-11-25 08:47:20,641 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-25 08:47:20,641 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 101 transitions. [2019-11-25 08:47:20,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-25 08:47:20,643 INFO L402 BasicCegarLoop]: Found error trace [2019-11-25 08:47:20,644 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 08:47:20,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-25 08:47:20,850 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_appendErr9REQUIRES_VIOLATION, sll_appendErr4REQUIRES_VIOLATION, sll_appendErr2REQUIRES_VIOLATION, sll_appendErr8REQUIRES_VIOLATION, sll_appendErr3REQUIRES_VIOLATION, sll_appendErr6REQUIRES_VIOLATION, sll_appendErr1REQUIRES_VIOLATION, sll_appendErr7REQUIRES_VIOLATION, sll_appendErr10REQUIRES_VIOLATION, sll_appendErr5REQUIRES_VIOLATION, sll_appendErr0REQUIRES_VIOLATION, sll_appendErr11REQUIRES_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]=== [2019-11-25 08:47:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:47:20,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1152614030, now seen corresponding path program 2 times [2019-11-25 08:47:20,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-25 08:47:20,850 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1847427150] [2019-11-25 08:47:20,851 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:21,150 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-25 08:47:21,153 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [99290324] [2019-11-25 08:47:21,154 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e4f6b70e-ce10-4bcc-84e2-70bada4af26d/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 08:47:21,434 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-25 08:47:21,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-25 08:47:21,439 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-25 08:47:21,443 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-25 08:47:21,460 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 08:47:21,460 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:21,464 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:21,464 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-25 08:47:21,464 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-25 08:47:21,747 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2019-11-25 08:47:21,748 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-25 08:47:21,748 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-25 08:47:21,749 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:21,807 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-25 08:47:21,809 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 08:47:21,809 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-25 08:47:22,014 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-25 08:47:22,014 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 50 [2019-11-25 08:47:22,015 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-25 08:47:22,066 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-25 08:47:22,067 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 08:47:22,068 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2019-11-25 08:47:22,120 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 08:47:22,120 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-25 08:47:35,583 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-25 08:47:35,583 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-25 08:47:35,587 INFO L168 Benchmark]: Toolchain (without parser) took 22448.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 196.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -138.5 MB). Peak memory consumption was 58.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:35,588 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:47:35,589 INFO L168 Benchmark]: CACSL2BoogieTranslator took 589.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:35,590 INFO L168 Benchmark]: Boogie Preprocessor took 99.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:35,590 INFO L168 Benchmark]: RCFGBuilder took 926.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:35,591 INFO L168 Benchmark]: TraceAbstraction took 20829.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -34.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-11-25 08:47:35,594 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 589.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -171.0 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 99.42 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: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 926.43 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 65.4 MB). Peak memory consumption was 65.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 20829.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -34.2 MB). Peak memory consumption was 19.8 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...