./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list_search-2.i --full-output --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 264dba86 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-properties/list_search-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d4b81a46ec2331214cca2fd1ae780369dc773284 --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported: (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (exists ((|v_insert_list_#t~malloc37.base_101| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (store (select |#memory_$Pointer$.base| insert_list_~l.base) (bvadd insert_list_~l.offset (_ bv1 32)) v_DerPreprocessor_3))) (or (not (= (_ bv1 1) (select |#valid| insert_list_~l.base))) (not (= v_DerPreprocessor_3 (select .cse0 insert_list_~l.offset))) (= (_ bv1 1) (select |#valid| (select (select (store |#memory_$Pointer$.base| insert_list_~l.base (store .cse0 (bvadd insert_list_~l.offset (_ bv4 32)) ~head~0.base)) ~head~0.base) (bvadd ~head~0.offset (_ bv4 32))))) (let ((.cse1 (store (select |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101|) (_ bv1 32) v_DerPreprocessor_2))) (and (= (_ bv0 1) (select |old(#valid)| |v_insert_list_#t~malloc37.base_101|)) (not (= (_ bv1 1) (select (store |old(#valid)| |v_insert_list_#t~malloc37.base_101| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101| (store .cse1 (_ bv4 32) |old(~head~0.base)|)) |old(~head~0.base)|) (bvadd |old(~head~0.offset)| (_ bv4 32)))))) (= (select .cse1 (_ bv0 32)) v_DerPreprocessor_2))))))) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 13:30:08,513 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 13:30:08,516 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 13:30:08,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 13:30:08,535 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 13:30:08,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 13:30:08,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 13:30:08,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 13:30:08,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 13:30:08,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 13:30:08,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 13:30:08,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 13:30:08,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 13:30:08,555 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 13:30:08,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 13:30:08,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 13:30:08,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 13:30:08,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 13:30:08,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 13:30:08,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 13:30:08,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 13:30:08,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 13:30:08,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 13:30:08,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 13:30:08,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 13:30:08,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 13:30:08,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 13:30:08,570 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 13:30:08,570 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 13:30:08,571 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 13:30:08,571 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 13:30:08,574 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 13:30:08,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 13:30:08,575 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 13:30:08,576 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 13:30:08,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 13:30:08,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 13:30:08,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 13:30:08,577 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 13:30:08,578 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 13:30:08,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 13:30:08,580 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2019-11-21 13:30:08,594 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 13:30:08,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 13:30:08,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 13:30:08,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 13:30:08,596 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 13:30:08,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 13:30:08,597 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-21 13:30:08,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 13:30:08,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 13:30:08,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-21 13:30:08,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 13:30:08,598 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 13:30:08,598 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 13:30:08,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 13:30:08,598 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 13:30:08,599 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 13:30:08,599 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-21 13:30:08,599 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 13:30:08,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 13:30:08,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 13:30:08,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 13:30:08,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 13:30:08,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 13:30:08,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 13:30:08,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 13:30:08,601 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 13:30:08,601 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 13:30:08,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 13:30:08,601 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-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4b81a46ec2331214cca2fd1ae780369dc773284 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 13:30:08,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 13:30:08,943 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 13:30:08,947 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 13:30:08,949 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 13:30:08,950 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 13:30:08,952 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-2.i [2019-11-21 13:30:09,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a4b5f2f/82ce9ed574884dcbb0811b1894c7c89b/FLAGc93cfbc7b [2019-11-21 13:30:09,604 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 13:30:09,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i [2019-11-21 13:30:09,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a4b5f2f/82ce9ed574884dcbb0811b1894c7c89b/FLAGc93cfbc7b [2019-11-21 13:30:09,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2a4b5f2f/82ce9ed574884dcbb0811b1894c7c89b [2019-11-21 13:30:09,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 13:30:09,884 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 13:30:09,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 13:30:09,886 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 13:30:09,889 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 13:30:09,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:09" (1/1) ... [2019-11-21 13:30:09,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@120696db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:09, skipping insertion in model container [2019-11-21 13:30:09,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:30:09" (1/1) ... [2019-11-21 13:30:09,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 13:30:09,954 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 13:30:10,476 INFO L966 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-21 13:30:10,477 INFO L969 CHandler]: at location: C: (mlist*)malloc(sizeof(mlist)) [781] [2019-11-21 13:30:10,477 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 13:30:10,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:30:10,507 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 13:30:10,516 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 13:30:10,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:30:10,592 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 13:30:10,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 13:30:10,790 INFO L205 MainTranslator]: Completed translation [2019-11-21 13:30:10,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10 WrapperNode [2019-11-21 13:30:10,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 13:30:10,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 13:30:10,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 13:30:10,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 13:30:10,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (1/1) ... [2019-11-21 13:30:10,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 13:30:10,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 13:30:10,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 13:30:10,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 13:30:10,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (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 [2019-11-21 13:30:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 13:30:10,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 13:30:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-21 13:30:11,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 13:30:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 13:30:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 13:30:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 13:30:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 13:30:11,002 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2019-11-21 13:30:11,003 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2019-11-21 13:30:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2019-11-21 13:30:11,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 13:30:11,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-21 13:30:11,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-21 13:30:11,006 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-11-21 13:30:11,008 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-11-21 13:30:11,008 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-11-21 13:30:11,008 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-11-21 13:30:11,008 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-11-21 13:30:11,009 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-11-21 13:30:11,010 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-11-21 13:30:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-11-21 13:30:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-11-21 13:30:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-11-21 13:30:11,011 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-11-21 13:30:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-11-21 13:30:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-11-21 13:30:11,012 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-11-21 13:30:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-11-21 13:30:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-11-21 13:30:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-11-21 13:30:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-11-21 13:30:11,013 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-11-21 13:30:11,014 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-11-21 13:30:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-11-21 13:30:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-11-21 13:30:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-21 13:30:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-11-21 13:30:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-11-21 13:30:11,015 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-11-21 13:30:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-11-21 13:30:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-11-21 13:30:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-11-21 13:30:11,016 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-11-21 13:30:11,017 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-11-21 13:30:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-21 13:30:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-11-21 13:30:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-11-21 13:30:11,018 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-11-21 13:30:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-11-21 13:30:11,019 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-11-21 13:30:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-11-21 13:30:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-11-21 13:30:11,020 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-11-21 13:30:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-11-21 13:30:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-11-21 13:30:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-11-21 13:30:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-11-21 13:30:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-11-21 13:30:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-11-21 13:30:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-11-21 13:30:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-11-21 13:30:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-11-21 13:30:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-11-21 13:30:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-11-21 13:30:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-11-21 13:30:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-11-21 13:30:11,025 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-11-21 13:30:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-11-21 13:30:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-11-21 13:30:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 13:30:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 13:30:11,030 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 13:30:11,031 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 13:30:11,032 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 13:30:11,033 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 13:30:11,034 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 13:30:11,035 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 13:30:11,036 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 13:30:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 13:30:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 13:30:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 13:30:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 13:30:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 13:30:11,042 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 13:30:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 13:30:11,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 13:30:12,002 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 13:30:12,003 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-21 13:30:12,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:12 BoogieIcfgContainer [2019-11-21 13:30:12,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 13:30:12,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 13:30:12,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 13:30:12,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 13:30:12,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:30:09" (1/3) ... [2019-11-21 13:30:12,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46806ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:12, skipping insertion in model container [2019-11-21 13:30:12,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:30:10" (2/3) ... [2019-11-21 13:30:12,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46806ede and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:30:12, skipping insertion in model container [2019-11-21 13:30:12,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:30:12" (3/3) ... [2019-11-21 13:30:12,014 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2019-11-21 13:30:12,024 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 13:30:12,033 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 32 error locations. [2019-11-21 13:30:12,045 INFO L249 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2019-11-21 13:30:12,066 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 13:30:12,066 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 13:30:12,067 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 13:30:12,067 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 13:30:12,067 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 13:30:12,067 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 13:30:12,068 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 13:30:12,068 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 13:30:12,087 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2019-11-21 13:30:12,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 13:30:12,097 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:12,099 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:30:12,099 INFO L410 AbstractCegarLoop]: === Iteration 1 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:12,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:12,106 INFO L82 PathProgramCache]: Analyzing trace with hash -2055481374, now seen corresponding path program 1 times [2019-11-21 13:30:12,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:12,119 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [50592832] [2019-11-21 13:30:12,119 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 [2019-11-21 13:30:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:12,483 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 13:30:12,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:12,556 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 [2019-11-21 13:30:12,557 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:12,564 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:12,565 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:12,565 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:30:12,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:30:12,582 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:30:12,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [50592832] [2019-11-21 13:30:12,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:30:12,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 13:30:12,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184809689] [2019-11-21 13:30:12,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 13:30:12,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:12,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 13:30:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:30:12,635 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2019-11-21 13:30:12,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:12,856 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2019-11-21 13:30:12,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 13:30:12,858 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-21 13:30:12,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:12,869 INFO L225 Difference]: With dead ends: 101 [2019-11-21 13:30:12,870 INFO L226 Difference]: Without dead ends: 97 [2019-11-21 13:30:12,872 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:30:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-21 13:30:12,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2019-11-21 13:30:12,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-21 13:30:12,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2019-11-21 13:30:12,923 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 10 [2019-11-21 13:30:12,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:12,923 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2019-11-21 13:30:12,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 13:30:12,924 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2019-11-21 13:30:12,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 13:30:12,924 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:12,924 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:30:13,128 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:13,128 INFO L410 AbstractCegarLoop]: === Iteration 2 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:13,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:13,129 INFO L82 PathProgramCache]: Analyzing trace with hash -2055481373, now seen corresponding path program 1 times [2019-11-21 13:30:13,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:13,130 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1939209751] [2019-11-21 13:30:13,130 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 [2019-11-21 13:30:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:13,455 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 13:30:13,456 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:30:13,477 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:13,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:30:13,513 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1939209751] [2019-11-21 13:30:13,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:30:13,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-21 13:30:13,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796350943] [2019-11-21 13:30:13,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 13:30:13,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:13,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 13:30:13,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:30:13,516 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 3 states. [2019-11-21 13:30:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:13,560 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2019-11-21 13:30:13,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 13:30:13,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-21 13:30:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:13,562 INFO L225 Difference]: With dead ends: 100 [2019-11-21 13:30:13,562 INFO L226 Difference]: Without dead ends: 100 [2019-11-21 13:30:13,563 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 13:30:13,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-21 13:30:13,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2019-11-21 13:30:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-21 13:30:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2019-11-21 13:30:13,575 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2019-11-21 13:30:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:13,576 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2019-11-21 13:30:13,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 13:30:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2019-11-21 13:30:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 13:30:13,577 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:13,577 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:30:13,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:13,782 INFO L410 AbstractCegarLoop]: === Iteration 3 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:13,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:13,782 INFO L82 PathProgramCache]: Analyzing trace with hash -2055481629, now seen corresponding path program 1 times [2019-11-21 13:30:13,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:13,783 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [681092330] [2019-11-21 13:30:13,783 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 [2019-11-21 13:30:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:14,059 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 13:30:14,060 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:14,076 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 [2019-11-21 13:30:14,076 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:14,110 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:14,110 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:14,110 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 13:30:14,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:30:14,124 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:14,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 13:30:14,163 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [681092330] [2019-11-21 13:30:14,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:30:14,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-21 13:30:14,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085881986] [2019-11-21 13:30:14,164 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-21 13:30:14,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-21 13:30:14,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-21 13:30:14,165 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 4 states. [2019-11-21 13:30:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:14,456 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2019-11-21 13:30:14,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 13:30:14,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-21 13:30:14,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:14,462 INFO L225 Difference]: With dead ends: 95 [2019-11-21 13:30:14,462 INFO L226 Difference]: Without dead ends: 95 [2019-11-21 13:30:14,462 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-21 13:30:14,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-21 13:30:14,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-11-21 13:30:14,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-21 13:30:14,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2019-11-21 13:30:14,484 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 10 [2019-11-21 13:30:14,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:14,484 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2019-11-21 13:30:14,486 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-21 13:30:14,486 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2019-11-21 13:30:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-21 13:30:14,489 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:14,490 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:30:14,690 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:14,691 INFO L410 AbstractCegarLoop]: === Iteration 4 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:14,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:14,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1345679994, now seen corresponding path program 1 times [2019-11-21 13:30:14,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:14,695 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [759080752] [2019-11-21 13:30:14,695 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 [2019-11-21 13:30:15,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:15,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 13:30:15,114 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:15,124 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 [2019-11-21 13:30:15,124 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:15,126 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:15,126 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:15,127 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:30:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-21 13:30:15,155 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:15,227 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-21 13:30:15,227 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [759080752] [2019-11-21 13:30:15,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:30:15,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 13:30:15,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205243824] [2019-11-21 13:30:15,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 13:30:15,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:15,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 13:30:15,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 13:30:15,229 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 5 states. [2019-11-21 13:30:15,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:15,718 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2019-11-21 13:30:15,722 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 13:30:15,722 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-11-21 13:30:15,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:15,727 INFO L225 Difference]: With dead ends: 122 [2019-11-21 13:30:15,730 INFO L226 Difference]: Without dead ends: 122 [2019-11-21 13:30:15,730 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-21 13:30:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-21 13:30:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2019-11-21 13:30:15,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-21 13:30:15,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2019-11-21 13:30:15,752 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 44 [2019-11-21 13:30:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:15,756 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2019-11-21 13:30:15,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 13:30:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2019-11-21 13:30:15,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-21 13:30:15,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:15,758 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:30:15,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:15,963 INFO L410 AbstractCegarLoop]: === Iteration 5 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:15,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:15,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1345679993, now seen corresponding path program 1 times [2019-11-21 13:30:15,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:15,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1396585272] [2019-11-21 13:30:15,966 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 [2019-11-21 13:30:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:16,415 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 13:30:16,419 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:16,432 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 [2019-11-21 13:30:16,432 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:16,447 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:16,447 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:16,447 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 13:30:16,502 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-21 13:30:16,502 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-21 13:30:16,762 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1396585272] [2019-11-21 13:30:16,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:30:16,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-21 13:30:16,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810415574] [2019-11-21 13:30:16,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 13:30:16,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:16,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 13:30:16,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-21 13:30:16,765 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 8 states. [2019-11-21 13:30:17,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:17,777 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2019-11-21 13:30:17,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 13:30:17,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2019-11-21 13:30:17,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:17,779 INFO L225 Difference]: With dead ends: 142 [2019-11-21 13:30:17,779 INFO L226 Difference]: Without dead ends: 142 [2019-11-21 13:30:17,779 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-11-21 13:30:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-21 13:30:17,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 108. [2019-11-21 13:30:17,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-21 13:30:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2019-11-21 13:30:17,789 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 44 [2019-11-21 13:30:17,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:17,789 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2019-11-21 13:30:17,790 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 13:30:17,790 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2019-11-21 13:30:17,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-21 13:30:17,791 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:17,791 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:30:18,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:18,004 INFO L410 AbstractCegarLoop]: === Iteration 6 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:18,005 INFO L82 PathProgramCache]: Analyzing trace with hash -2017097475, now seen corresponding path program 1 times [2019-11-21 13:30:18,006 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:18,006 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1171949652] [2019-11-21 13:30:18,007 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 [2019-11-21 13:30:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:18,330 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 13:30:18,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:18,361 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-21 13:30:18,361 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-11-21 13:30:18,422 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1171949652] [2019-11-21 13:30:18,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:30:18,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 13:30:18,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567065314] [2019-11-21 13:30:18,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 13:30:18,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:18,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 13:30:18,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 13:30:18,425 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand 5 states. [2019-11-21 13:30:18,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:18,635 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2019-11-21 13:30:18,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 13:30:18,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-11-21 13:30:18,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:18,638 INFO L225 Difference]: With dead ends: 127 [2019-11-21 13:30:18,638 INFO L226 Difference]: Without dead ends: 127 [2019-11-21 13:30:18,638 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-21 13:30:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-21 13:30:18,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2019-11-21 13:30:18,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-21 13:30:18,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2019-11-21 13:30:18,647 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 48 [2019-11-21 13:30:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:18,648 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2019-11-21 13:30:18,648 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 13:30:18,648 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2019-11-21 13:30:18,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-21 13:30:18,650 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:18,650 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2019-11-21 13:30:18,857 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:18,858 INFO L410 AbstractCegarLoop]: === Iteration 7 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash 72082182, now seen corresponding path program 1 times [2019-11-21 13:30:18,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:18,860 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2000076972] [2019-11-21 13:30:18,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-21 13:30:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:19,385 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-21 13:30:19,388 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:19,403 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 [2019-11-21 13:30:19,403 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,405 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:19,406 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,406 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:30:19,453 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-21 13:30:19,453 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,464 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:19,464 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,464 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-21 13:30:19,586 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:19,586 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 46 [2019-11-21 13:30:19,589 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,614 INFO L567 ElimStorePlain]: treesize reduction 26, result has 40.9 percent of original size [2019-11-21 13:30:19,615 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,615 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:18 [2019-11-21 13:30:19,675 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2019-11-21 13:30:19,675 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:19,681 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:19,682 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:30:19,682 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2019-11-21 13:30:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 13:30:19,740 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:20,176 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 13:30:20,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2000076972] [2019-11-21 13:30:20,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 13:30:20,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2019-11-21 13:30:20,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277904968] [2019-11-21 13:30:20,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-21 13:30:20,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:20,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-21 13:30:20,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-11-21 13:30:20,179 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 17 states. [2019-11-21 13:30:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:30:21,949 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2019-11-21 13:30:21,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 13:30:21,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2019-11-21 13:30:21,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:30:21,951 INFO L225 Difference]: With dead ends: 135 [2019-11-21 13:30:21,951 INFO L226 Difference]: Without dead ends: 135 [2019-11-21 13:30:21,952 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2019-11-21 13:30:21,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-21 13:30:21,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 114. [2019-11-21 13:30:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-21 13:30:21,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2019-11-21 13:30:21,960 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 47 [2019-11-21 13:30:21,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:30:21,961 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2019-11-21 13:30:21,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-21 13:30:21,961 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2019-11-21 13:30:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-21 13:30:21,962 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:30:21,962 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 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] [2019-11-21 13:30:22,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:22,167 INFO L410 AbstractCegarLoop]: === Iteration 8 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:30:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:30:22,168 INFO L82 PathProgramCache]: Analyzing trace with hash 72082183, now seen corresponding path program 1 times [2019-11-21 13:30:22,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:30:22,169 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1196272227] [2019-11-21 13:30:22,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:30:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:30:22,737 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-21 13:30:22,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:30:22,755 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 [2019-11-21 13:30:22,755 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:22,763 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:22,768 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 [2019-11-21 13:30:22,769 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:22,777 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:22,778 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:22,778 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 13:30:22,867 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-21 13:30:22,868 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:22,893 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:22,903 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-21 13:30:22,903 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:22,917 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:22,917 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:22,918 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2019-11-21 13:30:23,030 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:23,030 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 19 [2019-11-21 13:30:23,031 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:23,045 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:23,052 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2019-11-21 13:30:23,053 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:23,071 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:23,072 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:30:23,072 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:40, output treesize:33 [2019-11-21 13:30:23,207 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2019-11-21 13:30:23,208 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:23,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:23,225 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-21 13:30:23,226 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 13:30:23,235 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:30:23,236 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:30:23,236 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:20 [2019-11-21 13:30:23,337 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 13:30:23,337 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:30:23,934 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-21 13:30:24,033 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:30:30,627 WARN L192 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 13:30:31,043 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 13:30:31,390 WARN L192 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-21 13:30:31,398 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 13:30:31,408 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2019-11-21 13:30:32,020 WARN L192 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-11-21 13:30:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 13:30:42,135 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1196272227] [2019-11-21 13:30:42,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 13:30:42,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-21 13:30:42,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59219279] [2019-11-21 13:30:42,137 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-21 13:30:42,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:30:42,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-21 13:30:42,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=393, Unknown=3, NotChecked=0, Total=462 [2019-11-21 13:30:42,138 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 22 states. [2019-11-21 13:30:43,729 WARN L192 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2019-11-21 13:30:46,862 WARN L192 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-11-21 13:30:47,657 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2019-11-21 13:30:48,058 WARN L192 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-11-21 13:30:58,552 WARN L192 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-21 13:30:59,343 WARN L192 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-11-21 13:31:00,506 WARN L192 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-21 13:31:01,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:31:01,015 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2019-11-21 13:31:01,017 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-21 13:31:01,017 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2019-11-21 13:31:01,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:31:01,019 INFO L225 Difference]: With dead ends: 145 [2019-11-21 13:31:01,019 INFO L226 Difference]: Without dead ends: 145 [2019-11-21 13:31:01,020 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=284, Invalid=1195, Unknown=3, NotChecked=0, Total=1482 [2019-11-21 13:31:01,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-21 13:31:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2019-11-21 13:31:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-21 13:31:01,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2019-11-21 13:31:01,027 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 47 [2019-11-21 13:31:01,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:31:01,027 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2019-11-21 13:31:01,028 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-21 13:31:01,028 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2019-11-21 13:31:01,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 13:31:01,029 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:31:01,029 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:31:01,238 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:31:01,238 INFO L410 AbstractCegarLoop]: === Iteration 9 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:31:01,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:31:01,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1755324029, now seen corresponding path program 1 times [2019-11-21 13:31:01,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:31:01,240 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1437700025] [2019-11-21 13:31:01,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:31:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:31:01,668 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 13:31:01,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:31:01,678 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 [2019-11-21 13:31:01,679 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:01,680 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:01,681 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:01,681 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:31:01,699 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-21 13:31:01,699 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:31:01,763 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-11-21 13:31:01,763 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1437700025] [2019-11-21 13:31:01,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 13:31:01,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 13:31:01,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69674499] [2019-11-21 13:31:01,764 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 13:31:01,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:31:01,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 13:31:01,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 13:31:01,764 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 5 states. [2019-11-21 13:31:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:31:02,174 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2019-11-21 13:31:02,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 13:31:02,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-11-21 13:31:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:31:02,176 INFO L225 Difference]: With dead ends: 131 [2019-11-21 13:31:02,176 INFO L226 Difference]: Without dead ends: 131 [2019-11-21 13:31:02,176 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-21 13:31:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-21 13:31:02,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 119. [2019-11-21 13:31:02,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-21 13:31:02,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2019-11-21 13:31:02,190 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2019-11-21 13:31:02,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:31:02,191 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2019-11-21 13:31:02,191 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 13:31:02,191 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2019-11-21 13:31:02,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 13:31:02,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:31:02,198 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:31:02,398 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:31:02,399 INFO L410 AbstractCegarLoop]: === Iteration 10 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:31:02,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:31:02,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1755324030, now seen corresponding path program 1 times [2019-11-21 13:31:02,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:31:02,400 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1916333333] [2019-11-21 13:31:02,401 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:31:02,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 13:31:02,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-21 13:31:02,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:31:02,867 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-21 13:31:02,868 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:02,875 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:02,875 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:02,875 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-11-21 13:31:02,953 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2019-11-21 13:31:02,954 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:02,956 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:02,956 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:02,956 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-11-21 13:31:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 13:31:02,989 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:31:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-21 13:31:03,310 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1916333333] [2019-11-21 13:31:03,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 13:31:03,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2019-11-21 13:31:03,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177154741] [2019-11-21 13:31:03,311 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-21 13:31:03,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 13:31:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-21 13:31:03,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-21 13:31:03,312 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 17 states. [2019-11-21 13:31:04,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 13:31:04,763 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2019-11-21 13:31:04,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-21 13:31:04,764 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2019-11-21 13:31:04,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 13:31:04,765 INFO L225 Difference]: With dead ends: 142 [2019-11-21 13:31:04,765 INFO L226 Difference]: Without dead ends: 142 [2019-11-21 13:31:04,766 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=199, Invalid=793, Unknown=0, NotChecked=0, Total=992 [2019-11-21 13:31:04,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-21 13:31:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 119. [2019-11-21 13:31:04,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-21 13:31:04,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2019-11-21 13:31:04,772 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 51 [2019-11-21 13:31:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 13:31:04,772 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2019-11-21 13:31:04,772 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-21 13:31:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2019-11-21 13:31:04,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-21 13:31:04,773 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 13:31:04,774 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 13:31:04,977 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:31:04,978 INFO L410 AbstractCegarLoop]: === Iteration 11 === [insert_listErr4REQUIRES_VIOLATION, insert_listErr2REQUIRES_VIOLATION, insert_listErr3REQUIRES_VIOLATION, insert_listErr1REQUIRES_VIOLATION, insert_listErr6REQUIRES_VIOLATION, insert_listErr7REQUIRES_VIOLATION, insert_listErr5REQUIRES_VIOLATION, insert_listErr0REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr6ENSURES_VIOLATIONMEMORY_LEAK, mainErr1REQUIRES_VIOLATION, delete_listErr12ASSERT_VIOLATIONMEMORY_FREE, delete_listErr4REQUIRES_VIOLATION, delete_listErr3REQUIRES_VIOLATION, delete_listErr2REQUIRES_VIOLATION, delete_listErr7REQUIRES_VIOLATION, delete_listErr6REQUIRES_VIOLATION, delete_listErr5REQUIRES_VIOLATION, delete_listErr9REQUIRES_VIOLATION, delete_listErr8REQUIRES_VIOLATION, delete_listErr10ASSERT_VIOLATIONMEMORY_FREE, delete_listErr1REQUIRES_VIOLATION, delete_listErr11ASSERT_VIOLATIONMEMORY_FREE, delete_listErr0REQUIRES_VIOLATION, search_listErr0REQUIRES_VIOLATION, search_listErr1REQUIRES_VIOLATION, search_listErr3REQUIRES_VIOLATION, search_listErr2REQUIRES_VIOLATION]=== [2019-11-21 13:31:04,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 13:31:04,978 INFO L82 PathProgramCache]: Analyzing trace with hash -83321466, now seen corresponding path program 2 times [2019-11-21 13:31:04,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 13:31:04,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [229223292] [2019-11-21 13:31:04,980 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 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:31:05,510 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 13:31:05,510 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 13:31:05,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-21 13:31:05,517 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 13:31:05,524 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 [2019-11-21 13:31:05,524 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,526 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:05,526 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,526 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 13:31:05,571 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-21 13:31:05,571 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,583 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:05,583 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,584 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-11-21 13:31:05,654 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:05,655 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 2 case distinctions, treesize of input 21 treesize of output 59 [2019-11-21 13:31:05,656 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,706 INFO L567 ElimStorePlain]: treesize reduction 26, result has 50.0 percent of original size [2019-11-21 13:31:05,706 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,706 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:26 [2019-11-21 13:31:05,851 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_175|], 2=[|v_#memory_$Pointer$.base_183|]} [2019-11-21 13:31:05,860 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2019-11-21 13:31:05,860 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:05,947 INFO L567 ElimStorePlain]: treesize reduction 5, result has 91.5 percent of original size [2019-11-21 13:31:05,953 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:05,992 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:05,993 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:05,993 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:54 [2019-11-21 13:31:07,996 WARN L192 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-21 13:31:10,020 WARN L192 SmtUtils]: Spent 1.97 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-21 13:31:10,093 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:10,093 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 28 treesize of output 91 [2019-11-21 13:31:10,095 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:10,253 WARN L192 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-11-21 13:31:10,253 INFO L567 ElimStorePlain]: treesize reduction 40, result has 64.9 percent of original size [2019-11-21 13:31:10,259 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 44 [2019-11-21 13:31:10,275 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 25 [2019-11-21 13:31:10,276 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:10,300 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:10,300 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:10,371 INFO L567 ElimStorePlain]: treesize reduction 4, result has 94.5 percent of original size [2019-11-21 13:31:10,372 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 13:31:10,372 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:70, output treesize:79 [2019-11-21 13:31:10,596 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-21 13:31:10,597 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 13:31:10,629 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:10,630 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:10,630 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:94, output treesize:83 [2019-11-21 13:31:10,775 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:10,776 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 40 [2019-11-21 13:31:10,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 13:31:10,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 13:31:10,778 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:10,818 INFO L567 ElimStorePlain]: treesize reduction 4, result has 88.9 percent of original size [2019-11-21 13:31:10,819 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:10,820 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:84, output treesize:32 [2019-11-21 13:31:10,933 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-21 13:31:10,933 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 13:31:11,567 WARN L192 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-11-21 13:31:11,681 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-21 13:31:11,897 WARN L192 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-21 13:31:12,047 WARN L192 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-11-21 13:31:12,054 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:12,077 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:31:12,078 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-21 13:31:12,078 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:45 [2019-11-21 13:31:22,532 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2019-11-21 13:31:48,422 WARN L192 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-21 13:32:04,820 WARN L192 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2019-11-21 13:32:04,825 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 13:32:09,252 WARN L192 SmtUtils]: Spent 4.43 s on a formula simplification that was a NOOP. DAG size: 53 [2019-11-21 13:32:09,253 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 13:32:09,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 13:32:09,456 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported: (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (exists ((|v_insert_list_#t~malloc37.base_101| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (store (select |#memory_$Pointer$.base| insert_list_~l.base) (bvadd insert_list_~l.offset (_ bv1 32)) v_DerPreprocessor_3))) (or (not (= (_ bv1 1) (select |#valid| insert_list_~l.base))) (not (= v_DerPreprocessor_3 (select .cse0 insert_list_~l.offset))) (= (_ bv1 1) (select |#valid| (select (select (store |#memory_$Pointer$.base| insert_list_~l.base (store .cse0 (bvadd insert_list_~l.offset (_ bv4 32)) ~head~0.base)) ~head~0.base) (bvadd ~head~0.offset (_ bv4 32))))) (let ((.cse1 (store (select |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101|) (_ bv1 32) v_DerPreprocessor_2))) (and (= (_ bv0 1) (select |old(#valid)| |v_insert_list_#t~malloc37.base_101|)) (not (= (_ bv1 1) (select (store |old(#valid)| |v_insert_list_#t~malloc37.base_101| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101| (store .cse1 (_ bv4 32) |old(~head~0.base)|)) |old(~head~0.base)|) (bvadd |old(~head~0.offset)| (_ bv4 32)))))) (= (select .cse1 (_ bv0 32)) v_DerPreprocessor_2))))))) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:667) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:493) 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) [2019-11-21 13:32:09,462 INFO L168 Benchmark]: Toolchain (without parser) took 119578.18 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 341.8 MB). Free memory was 961.7 MB in the beginning and 943.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 360.4 MB. Max. memory is 11.5 GB. [2019-11-21 13:32:09,462 INFO L168 Benchmark]: CDTParser took 0.27 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. [2019-11-21 13:32:09,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 905.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -98.3 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. [2019-11-21 13:32:09,463 INFO L168 Benchmark]: Boogie Preprocessor took 149.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 13:32:09,464 INFO L168 Benchmark]: RCFGBuilder took 1063.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 968.1 MB in the end (delta: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. [2019-11-21 13:32:09,464 INFO L168 Benchmark]: TraceAbstraction took 117454.24 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 222.3 MB). Free memory was 968.1 MB in the beginning and 943.2 MB in the end (delta: 25.0 MB). Peak memory consumption was 247.3 MB. Max. memory is 11.5 GB. [2019-11-21 13:32:09,466 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 905.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 956.3 MB in the beginning and 1.1 GB in the end (delta: -98.3 MB). Peak memory consumption was 32.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 149.67 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1063.65 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 968.1 MB in the end (delta: 86.5 MB). Peak memory consumption was 86.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 117454.24 ms. Allocated memory was 1.1 GB in the beginning and 1.4 GB in the end (delta: 222.3 MB). Free memory was 968.1 MB in the beginning and 943.2 MB in the end (delta: 25.0 MB). Peak memory consumption was 247.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported: (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (exists ((|v_insert_list_#t~malloc37.base_101| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (store (select |#memory_$Pointer$.base| insert_list_~l.base) (bvadd insert_list_~l.offset (_ bv1 32)) v_DerPreprocessor_3))) (or (not (= (_ bv1 1) (select |#valid| insert_list_~l.base))) (not (= v_DerPreprocessor_3 (select .cse0 insert_list_~l.offset))) (= (_ bv1 1) (select |#valid| (select (select (store |#memory_$Pointer$.base| insert_list_~l.base (store .cse0 (bvadd insert_list_~l.offset (_ bv4 32)) ~head~0.base)) ~head~0.base) (bvadd ~head~0.offset (_ bv4 32))))) (let ((.cse1 (store (select |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101|) (_ bv1 32) v_DerPreprocessor_2))) (and (= (_ bv0 1) (select |old(#valid)| |v_insert_list_#t~malloc37.base_101|)) (not (= (_ bv1 1) (select (store |old(#valid)| |v_insert_list_#t~malloc37.base_101| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101| (store .cse1 (_ bv4 32) |old(~head~0.base)|)) |old(~head~0.base)|) (bvadd |old(~head~0.offset)| (_ bv4 32)))))) (= (select .cse1 (_ bv0 32)) v_DerPreprocessor_2))))))) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (exists ((|v_insert_list_#t~malloc37.base_101| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (store (select |#memory_$Pointer$.base| insert_list_~l.base) (bvadd insert_list_~l.offset (_ bv1 32)) v_DerPreprocessor_3))) (or (not (= (_ bv1 1) (select |#valid| insert_list_~l.base))) (not (= v_DerPreprocessor_3 (select .cse0 insert_list_~l.offset))) (= (_ bv1 1) (select |#valid| (select (select (store |#memory_$Pointer$.base| insert_list_~l.base (store .cse0 (bvadd insert_list_~l.offset (_ bv4 32)) ~head~0.base)) ~head~0.base) (bvadd ~head~0.offset (_ bv4 32))))) (let ((.cse1 (store (select |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101|) (_ bv1 32) v_DerPreprocessor_2))) (and (= (_ bv0 1) (select |old(#valid)| |v_insert_list_#t~malloc37.base_101|)) (not (= (_ bv1 1) (select (store |old(#valid)| |v_insert_list_#t~malloc37.base_101| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_insert_list_#t~malloc37.base_101| (store .cse1 (_ bv4 32) |old(~head~0.base)|)) |old(~head~0.base)|) (bvadd |old(~head~0.offset)| (_ bv4 32)))))) (= (select .cse1 (_ bv0 32)) v_DerPreprocessor_2))))))): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:667) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...