./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f6fb2bb1 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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 b1e80acb90dba1afece1695551c9c89d7adc1424 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-f6fb2bb [2019-11-19 19:50:26,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:50:26,692 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:50:26,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:50:26,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:50:26,710 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:50:26,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:50:26,713 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:50:26,715 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:50:26,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:50:26,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:50:26,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:50:26,719 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:50:26,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:50:26,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:50:26,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:50:26,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:50:26,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:50:26,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:50:26,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:50:26,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:50:26,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:50:26,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:50:26,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:50:26,743 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:50:26,743 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:50:26,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:50:26,746 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:50:26,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:50:26,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:50:26,749 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:50:26,750 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:50:26,751 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:50:26,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:50:26,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:50:26,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:50:26,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:50:26,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:50:26,759 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:50:26,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:50:26,764 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:50:26,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-19 19:50:26,787 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:50:26,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:50:26,789 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:50:26,790 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:50:26,790 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:50:26,790 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:50:26,790 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 19:50:26,791 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:50:26,791 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:50:26,791 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 19:50:26,791 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:50:26,791 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 19:50:26,792 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 19:50:26,792 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-19 19:50:26,792 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:50:26,792 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 19:50:26,793 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 19:50:26,793 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 19:50:26,793 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:50:26,793 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:50:26,793 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:50:26,794 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:50:26,794 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:50:26,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:50:26,795 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:50:26,795 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:50:26,795 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 19:50:26,795 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 19:50:26,796 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 19:50:26,796 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-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 -> b1e80acb90dba1afece1695551c9c89d7adc1424 [2019-11-19 19:50:27,098 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:50:27,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:50:27,117 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:50:27,119 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:50:27,119 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:50:27,120 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2019-11-19 19:50:27,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a24423469/08cf55615276436485c03666fef844a6/FLAG1d6fceeb2 [2019-11-19 19:50:27,713 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:50:27,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2n_prepend_unequal.i [2019-11-19 19:50:27,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a24423469/08cf55615276436485c03666fef844a6/FLAG1d6fceeb2 [2019-11-19 19:50:28,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a24423469/08cf55615276436485c03666fef844a6 [2019-11-19 19:50:28,013 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:50:28,015 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 19:50:28,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:50:28,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:50:28,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:50:28,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b98fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28, skipping insertion in model container [2019-11-19 19:50:28,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,039 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:50:28,084 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:50:28,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:50:28,529 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:50:28,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:50:28,661 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:50:28,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28 WrapperNode [2019-11-19 19:50:28,663 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:50:28,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:50:28,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:50:28,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:50:28,676 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... [2019-11-19 19:50:28,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:50:28,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:50:28,749 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:50:28,749 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:50:28,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:50:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 19:50:28,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:50:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 19:50:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 19:50:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 19:50:28,804 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-19 19:50:28,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-11-19 19:50:28,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-11-19 19:50:28,805 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2019-11-19 19:50:28,805 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 19:50:28,806 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 19:50:28,806 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 19:50:28,806 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 19:50:28,806 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 19:50:28,807 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 19:50:28,807 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 19:50:28,807 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 19:50:28,807 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 19:50:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 19:50:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 19:50:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 19:50:28,808 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 19:50:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 19:50:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 19:50:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 19:50:28,809 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 19:50:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 19:50:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 19:50:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 19:50:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 19:50:28,810 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 19:50:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 19:50:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 19:50:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 19:50:28,811 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 19:50:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 19:50:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 19:50:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 19:50:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 19:50:28,812 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 19:50:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 19:50:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 19:50:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 19:50:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 19:50:28,813 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 19:50:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 19:50:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 19:50:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 19:50:28,814 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 19:50:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 19:50:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 19:50:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 19:50:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 19:50:28,815 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 19:50:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 19:50:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 19:50:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 19:50:28,816 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 19:50:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 19:50:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 19:50:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 19:50:28,817 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 19:50:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 19:50:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 19:50:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 19:50:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 19:50:28,818 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 19:50:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-19 19:50:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 19:50:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 19:50:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 19:50:28,819 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 19:50:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 19:50:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 19:50:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 19:50:28,820 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 19:50:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 19:50:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 19:50:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 19:50:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 19:50:28,821 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 19:50:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 19:50:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 19:50:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 19:50:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 19:50:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 19:50:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 19:50:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 19:50:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 19:50:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 19:50:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 19:50:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 19:50:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 19:50:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 19:50:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 19:50:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 19:50:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 19:50:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 19:50:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 19:50:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 19:50:28,825 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 19:50:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 19:50:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 19:50:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 19:50:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 19:50:28,826 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 19:50:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 19:50:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 19:50:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 19:50:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 19:50:28,827 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 19:50:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 19:50:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 19:50:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 19:50:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 19:50:28,828 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 19:50:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 19:50:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-19 19:50:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 19:50:28,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 19:50:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 19:50:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-11-19 19:50:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-11-19 19:50:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 19:50:28,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 19:50:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2019-11-19 19:50:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 19:50:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-19 19:50:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-19 19:50:28,831 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 19:50:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 19:50:28,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:50:29,197 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 19:50:29,666 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:50:29,667 INFO L285 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-19 19:50:29,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:29 BoogieIcfgContainer [2019-11-19 19:50:29,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:50:29,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:50:29,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:50:29,674 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:50:29,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:50:28" (1/3) ... [2019-11-19 19:50:29,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a5aa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:29, skipping insertion in model container [2019-11-19 19:50:29,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:50:28" (2/3) ... [2019-11-19 19:50:29,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a5aa71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:50:29, skipping insertion in model container [2019-11-19 19:50:29,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:50:29" (3/3) ... [2019-11-19 19:50:29,687 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2019-11-19 19:50:29,698 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:50:29,709 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 30 error locations. [2019-11-19 19:50:29,721 INFO L249 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2019-11-19 19:50:29,742 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:50:29,742 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 19:50:29,742 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:50:29,743 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:50:29,743 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:50:29,743 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:50:29,743 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:50:29,744 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:50:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states. [2019-11-19 19:50:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 19:50:29,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:29,775 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:50:29,775 INFO L410 AbstractCegarLoop]: === Iteration 1 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:29,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:29,783 INFO L82 PathProgramCache]: Analyzing trace with hash -165044195, now seen corresponding path program 1 times [2019-11-19 19:50:29,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:29,796 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1344743743] [2019-11-19 19:50:29,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:30,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:50:30,057 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-19 19:50:30,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:30,133 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 [2019-11-19 19:50:30,134 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:30,145 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:50:30,145 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:50:30,146 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 19:50:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:30,158 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:30,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:30,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1344743743] [2019-11-19 19:50:30,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:50:30,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-19 19:50:30,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126790266] [2019-11-19 19:50:30,186 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-19 19:50:30,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:50:30,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-19 19:50:30,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-19 19:50:30,205 INFO L87 Difference]: Start difference. First operand 97 states. Second operand 3 states. [2019-11-19 19:50:30,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:50:30,399 INFO L93 Difference]: Finished difference Result 95 states and 101 transitions. [2019-11-19 19:50:30,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 19:50:30,401 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-19 19:50:30,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:50:30,414 INFO L225 Difference]: With dead ends: 95 [2019-11-19 19:50:30,414 INFO L226 Difference]: Without dead ends: 88 [2019-11-19 19:50:30,417 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 [2019-11-19 19:50:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2019-11-19 19:50:30,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2019-11-19 19:50:30,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2019-11-19 19:50:30,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 91 transitions. [2019-11-19 19:50:30,503 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 91 transitions. Word has length 13 [2019-11-19 19:50:30,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:50:30,505 INFO L462 AbstractCegarLoop]: Abstraction has 88 states and 91 transitions. [2019-11-19 19:50:30,505 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-19 19:50:30,506 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 91 transitions. [2019-11-19 19:50:30,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 19:50:30,507 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:30,507 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:50:30,710 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:50:30,711 INFO L410 AbstractCegarLoop]: === Iteration 2 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:30,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:30,712 INFO L82 PathProgramCache]: Analyzing trace with hash -165044194, now seen corresponding path program 1 times [2019-11-19 19:50:30,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:30,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1563056026] [2019-11-19 19:50:30,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:50:30,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 19:50:30,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:30,972 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 [2019-11-19 19:50:30,972 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:30,979 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:50:30,980 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:50:30,980 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 19:50:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:30,991 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:31,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:31,037 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1563056026] [2019-11-19 19:50:31,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:50:31,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-19 19:50:31,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950644386] [2019-11-19 19:50:31,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 19:50:31,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:50:31,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 19:50:31,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-19 19:50:31,041 INFO L87 Difference]: Start difference. First operand 88 states and 91 transitions. Second operand 4 states. [2019-11-19 19:50:31,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:50:31,319 INFO L93 Difference]: Finished difference Result 86 states and 89 transitions. [2019-11-19 19:50:31,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-19 19:50:31,321 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-19 19:50:31,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:50:31,322 INFO L225 Difference]: With dead ends: 86 [2019-11-19 19:50:31,323 INFO L226 Difference]: Without dead ends: 86 [2019-11-19 19:50:31,324 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 [2019-11-19 19:50:31,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2019-11-19 19:50:31,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2019-11-19 19:50:31,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2019-11-19 19:50:31,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2019-11-19 19:50:31,335 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 13 [2019-11-19 19:50:31,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:50:31,336 INFO L462 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2019-11-19 19:50:31,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 19:50:31,336 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2019-11-19 19:50:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 19:50:31,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:31,338 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:50:31,540 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:50:31,541 INFO L410 AbstractCegarLoop]: === Iteration 3 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash 312968081, now seen corresponding path program 1 times [2019-11-19 19:50:31,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:31,544 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [856656837] [2019-11-19 19:50:31,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:50:31,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 19:50:31,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:31,779 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 [2019-11-19 19:50:31,780 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:31,784 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:50:31,784 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:50:31,784 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 19:50:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:31,830 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:31,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:31,893 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [856656837] [2019-11-19 19:50:31,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:50:31,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-19 19:50:31,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231385233] [2019-11-19 19:50:31,894 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 19:50:31,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:50:31,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 19:50:31,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-19 19:50:31,895 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand 6 states. [2019-11-19 19:50:32,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:50:32,262 INFO L93 Difference]: Finished difference Result 90 states and 95 transitions. [2019-11-19 19:50:32,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:50:32,263 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-19 19:50:32,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:50:32,266 INFO L225 Difference]: With dead ends: 90 [2019-11-19 19:50:32,266 INFO L226 Difference]: Without dead ends: 90 [2019-11-19 19:50:32,266 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 [2019-11-19 19:50:32,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-19 19:50:32,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2019-11-19 19:50:32,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-19 19:50:32,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2019-11-19 19:50:32,278 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 19 [2019-11-19 19:50:32,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:50:32,278 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2019-11-19 19:50:32,278 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 19:50:32,278 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2019-11-19 19:50:32,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-19 19:50:32,279 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:32,280 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:50:32,491 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:50:32,492 INFO L410 AbstractCegarLoop]: === Iteration 4 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:32,493 INFO L82 PathProgramCache]: Analyzing trace with hash 312968082, now seen corresponding path program 1 times [2019-11-19 19:50:32,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:32,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1769975021] [2019-11-19 19:50:32,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:50:32,701 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-19 19:50:32,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:32,718 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 [2019-11-19 19:50:32,718 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:32,724 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:50:32,725 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:50:32,725 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 19:50:32,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:32,798 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:33,147 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1769975021] [2019-11-19 19:50:33,148 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:50:33,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2019-11-19 19:50:33,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629745653] [2019-11-19 19:50:33,149 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-19 19:50:33,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:50:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-19 19:50:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-11-19 19:50:33,150 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 10 states. [2019-11-19 19:50:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:50:34,031 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2019-11-19 19:50:34,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:50:34,032 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2019-11-19 19:50:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:50:34,034 INFO L225 Difference]: With dead ends: 89 [2019-11-19 19:50:34,034 INFO L226 Difference]: Without dead ends: 89 [2019-11-19 19:50:34,034 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-11-19 19:50:34,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-11-19 19:50:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2019-11-19 19:50:34,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2019-11-19 19:50:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 87 transitions. [2019-11-19 19:50:34,041 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 87 transitions. Word has length 19 [2019-11-19 19:50:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:50:34,042 INFO L462 AbstractCegarLoop]: Abstraction has 84 states and 87 transitions. [2019-11-19 19:50:34,042 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-19 19:50:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 87 transitions. [2019-11-19 19:50:34,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-19 19:50:34,043 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:34,043 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] [2019-11-19 19:50:34,246 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:50:34,247 INFO L410 AbstractCegarLoop]: === Iteration 5 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:34,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:34,248 INFO L82 PathProgramCache]: Analyzing trace with hash 812001672, now seen corresponding path program 1 times [2019-11-19 19:50:34,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:34,250 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1672816158] [2019-11-19 19:50:34,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:50:34,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:50:34,469 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:34,496 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:34,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:34,568 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1672816158] [2019-11-19 19:50:34,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:50:34,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-19 19:50:34,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289449390] [2019-11-19 19:50:34,569 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-19 19:50:34,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:50:34,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-19 19:50:34,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-19 19:50:34,570 INFO L87 Difference]: Start difference. First operand 84 states and 87 transitions. Second operand 7 states. [2019-11-19 19:50:34,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:50:34,621 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2019-11-19 19:50:34,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-19 19:50:34,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-11-19 19:50:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:50:34,624 INFO L225 Difference]: With dead ends: 93 [2019-11-19 19:50:34,624 INFO L226 Difference]: Without dead ends: 90 [2019-11-19 19:50:34,625 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 [2019-11-19 19:50:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-19 19:50:34,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2019-11-19 19:50:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-11-19 19:50:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2019-11-19 19:50:34,633 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 25 [2019-11-19 19:50:34,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:50:34,633 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2019-11-19 19:50:34,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-19 19:50:34,634 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2019-11-19 19:50:34,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-19 19:50:34,635 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:34,635 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] [2019-11-19 19:50:34,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:50:34,847 INFO L410 AbstractCegarLoop]: === Iteration 6 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:34,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:34,848 INFO L82 PathProgramCache]: Analyzing trace with hash 1663956357, now seen corresponding path program 1 times [2019-11-19 19:50:34,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:34,849 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [857251687] [2019-11-19 19:50:34,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:50:35,167 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-19 19:50:35,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:35,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:50:35,226 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-19 19:50:35,405 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [857251687] [2019-11-19 19:50:35,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-19 19:50:35,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-19 19:50:35,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647255909] [2019-11-19 19:50:35,406 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-19 19:50:35,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:50:35,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-19 19:50:35,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-19 19:50:35,407 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand 9 states. [2019-11-19 19:50:35,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:50:35,556 INFO L93 Difference]: Finished difference Result 99 states and 104 transitions. [2019-11-19 19:50:35,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-19 19:50:35,563 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-11-19 19:50:35,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:50:35,564 INFO L225 Difference]: With dead ends: 99 [2019-11-19 19:50:35,565 INFO L226 Difference]: Without dead ends: 96 [2019-11-19 19:50:35,565 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 [2019-11-19 19:50:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-11-19 19:50:35,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 91. [2019-11-19 19:50:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-19 19:50:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2019-11-19 19:50:35,573 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 38 [2019-11-19 19:50:35,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:50:35,574 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2019-11-19 19:50:35,574 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-19 19:50:35,574 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2019-11-19 19:50:35,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-19 19:50:35,576 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:50:35,576 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] [2019-11-19 19:50:35,780 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:50:35,781 INFO L410 AbstractCegarLoop]: === Iteration 7 === [sll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, sll_destroyErr0REQUIRES_VIOLATION, sll_destroyErr1REQUIRES_VIOLATION, sll_createErr0REQUIRES_VIOLATION, sll_createErr1REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr12ENSURES_VIOLATIONMEMORY_LEAK, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, node_createErr1REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION, sll_prependErr4REQUIRES_VIOLATION, sll_prependErr3REQUIRES_VIOLATION, sll_prependErr2REQUIRES_VIOLATION, sll_prependErr1REQUIRES_VIOLATION, sll_prependErr0REQUIRES_VIOLATION, sll_prependErr5REQUIRES_VIOLATION]=== [2019-11-19 19:50:35,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:50:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1121471656, now seen corresponding path program 2 times [2019-11-19 19:50:35,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:50:35,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1727286162] [2019-11-19 19:50:35,784 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:36,110 ERROR L271 FreeRefinementEngine]: Caught known exception: Array theory solver does not yet support write-chains connecting two different constant arrays [2019-11-19 19:50:36,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966608683] [2019-11-19 19:50:36,111 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2019-11-19 19:50:36,315 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-19 19:50:36,315 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-19 19:50:36,320 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-19 19:50:36,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:50:36,330 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 [2019-11-19 19:50:36,331 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:36,333 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:50:36,333 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:50:36,333 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 19:50:36,617 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-19 19:50:36,618 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 [2019-11-19 19:50:36,619 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:36,663 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-19 19:50:36,664 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. [2019-11-19 19:50:36,665 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-19 19:50:36,935 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:50:36,935 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 [2019-11-19 19:50:36,937 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:50:36,982 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-19 19:50:36,983 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. [2019-11-19 19:50:36,984 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:20 [2019-11-19 19:50:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-19 19:50:37,048 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:50:59,428 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-19 19:50:59,429 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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-19 19:50:59,435 INFO L168 Benchmark]: Toolchain (without parser) took 31420.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.0 MB). Free memory was 956.3 MB in the beginning and 863.5 MB in the end (delta: 92.9 MB). Peak memory consumption was 307.8 MB. Max. memory is 11.5 GB. [2019-11-19 19:50:59,436 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:50:59,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:50:59,437 INFO L168 Benchmark]: Boogie Preprocessor took 83.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-19 19:50:59,441 INFO L168 Benchmark]: RCFGBuilder took 920.82 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 11.5 GB. [2019-11-19 19:50:59,441 INFO L168 Benchmark]: TraceAbstraction took 29763.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 863.5 MB in the end (delta: 198.0 MB). Peak memory consumption was 264.0 MB. Max. memory is 11.5 GB. [2019-11-19 19:50:59,445 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 647.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 148.9 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -169.0 MB). Peak memory consumption was 31.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.56 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 920.82 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: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 29763.05 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.1 MB). Free memory was 1.1 GB in the beginning and 863.5 MB in the end (delta: 198.0 MB). Peak memory consumption was 264.0 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...