./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 64bit -------------------------------------------------------------------------------- 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-64bit-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 64bit --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 12:13:19,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 12:13:19,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 12:13:19,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 12:13:19,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 12:13:19,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 12:13:19,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 12:13:19,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 12:13:19,295 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 12:13:19,296 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 12:13:19,298 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 12:13:19,299 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 12:13:19,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 12:13:19,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 12:13:19,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 12:13:19,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 12:13:19,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 12:13:19,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 12:13:19,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 12:13:19,316 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 12:13:19,320 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 12:13:19,322 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 12:13:19,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 12:13:19,326 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 12:13:19,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 12:13:19,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 12:13:19,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 12:13:19,334 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 12:13:19,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 12:13:19,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 12:13:19,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 12:13:19,338 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 12:13:19,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 12:13:19,339 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 12:13:19,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 12:13:19,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 12:13:19,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 12:13:19,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 12:13:19,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 12:13:19,348 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 12:13:19,349 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 12:13:19,350 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-64bit-Automizer_Bitvector.epf [2019-11-21 12:13:19,372 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 12:13:19,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 12:13:19,374 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 12:13:19,374 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 12:13:19,374 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 12:13:19,375 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 12:13:19,375 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 12:13:19,375 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 12:13:19,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 12:13:19,375 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 12:13:19,376 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 12:13:19,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 12:13:19,377 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 12:13:19,377 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 12:13:19,378 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 12:13:19,378 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 12:13:19,378 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 12:13:19,378 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 12:13:19,378 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 12:13:19,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 12:13:19,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 12:13:19,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 12:13:19,379 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 12:13:19,380 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 12:13:19,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 12:13:19,380 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 -> 64bit 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 12:13:19,738 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 12:13:19,751 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 12:13:19,755 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 12:13:19,756 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 12:13:19,757 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 12:13:19,758 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_search-2.i [2019-11-21 12:13:19,819 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cc209a3/5ed7e84d25c3489f9e3051d149178f64/FLAG0a2718976 [2019-11-21 12:13:20,382 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 12:13:20,383 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_search-2.i [2019-11-21 12:13:20,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cc209a3/5ed7e84d25c3489f9e3051d149178f64/FLAG0a2718976 [2019-11-21 12:13:20,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/31cc209a3/5ed7e84d25c3489f9e3051d149178f64 [2019-11-21 12:13:20,651 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 12:13:20,652 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 12:13:20,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 12:13:20,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 12:13:20,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 12:13:20,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:13:20" (1/1) ... [2019-11-21 12:13:20,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd35299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:20, skipping insertion in model container [2019-11-21 12:13:20,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:13:20" (1/1) ... [2019-11-21 12:13:20,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 12:13:20,736 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 12:13:21,263 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 12:13:21,263 INFO L969 CHandler]: at location: C: (mlist*)malloc(sizeof(mlist)) [781] [2019-11-21 12:13:21,264 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 12:13:21,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:13:21,286 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 12:13:21,294 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 12:13:21,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:13:21,373 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 12:13:21,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:13:21,623 INFO L205 MainTranslator]: Completed translation [2019-11-21 12:13:21,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21 WrapperNode [2019-11-21 12:13:21,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 12:13:21,625 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 12:13:21,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 12:13:21,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 12:13:21,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,739 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (1/1) ... [2019-11-21 12:13:21,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 12:13:21,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 12:13:21,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 12:13:21,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 12:13:21,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (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 12:13:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 12:13:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 12:13:21,845 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2019-11-21 12:13:21,846 INFO L138 BoogieDeclarations]: Found implementation of procedure delete_list [2019-11-21 12:13:21,847 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2019-11-21 12:13:21,847 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 12:13:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-21 12:13:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-21 12:13:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-11-21 12:13:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-11-21 12:13:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-11-21 12:13:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-11-21 12:13:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-11-21 12:13:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-11-21 12:13:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-11-21 12:13:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-11-21 12:13:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-11-21 12:13:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-11-21 12:13:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-11-21 12:13:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-11-21 12:13:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-11-21 12:13:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-11-21 12:13:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-11-21 12:13:21,851 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-11-21 12:13:21,852 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-11-21 12:13:21,853 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-11-21 12:13:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-11-21 12:13:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-11-21 12:13:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-21 12:13:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-11-21 12:13:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-11-21 12:13:21,854 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-11-21 12:13:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-11-21 12:13:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-21 12:13:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-11-21 12:13:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-11-21 12:13:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-11-21 12:13:21,855 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-11-21 12:13:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-11-21 12:13:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-11-21 12:13:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-11-21 12:13:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-11-21 12:13:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-11-21 12:13:21,856 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-11-21 12:13:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-11-21 12:13:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-11-21 12:13:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-11-21 12:13:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-11-21 12:13:21,857 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-11-21 12:13:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-11-21 12:13:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-11-21 12:13:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-11-21 12:13:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-11-21 12:13:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-11-21 12:13:21,858 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-11-21 12:13:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-11-21 12:13:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-11-21 12:13:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-11-21 12:13:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-11-21 12:13:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-11-21 12:13:21,859 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-11-21 12:13:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-11-21 12:13:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-21 12:13:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-11-21 12:13:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-11-21 12:13:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-11-21 12:13:21,860 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-11-21 12:13:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-11-21 12:13:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-11-21 12:13:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-11-21 12:13:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-11-21 12:13:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-11-21 12:13:21,861 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-11-21 12:13:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-11-21 12:13:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-11-21 12:13:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-11-21 12:13:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-11-21 12:13:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-11-21 12:13:21,862 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-11-21 12:13:21,863 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-11-21 12:13:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-11-21 12:13:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-11-21 12:13:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-11-21 12:13:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-11-21 12:13:21,864 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 12:13:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 12:13:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 12:13:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 12:13:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 12:13:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 12:13:21,865 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 12:13:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 12:13:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 12:13:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 12:13:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 12:13:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 12:13:21,866 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 12:13:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 12:13:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 12:13:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 12:13:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 12:13:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 12:13:21,867 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 12:13:21,868 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 12:13:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 12:13:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 12:13:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 12:13:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 12:13:21,869 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 12:13:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 12:13:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 12:13:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 12:13:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 12:13:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 12:13:21,870 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 12:13:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 12:13:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 12:13:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 12:13:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 12:13:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 12:13:21,871 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 12:13:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 12:13:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 12:13:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 12:13:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 12:13:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 12:13:21,872 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 12:13:21,873 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 12:13:21,874 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 12:13:21,875 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 12:13:21,876 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 12:13:21,877 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 12:13:21,878 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 12:13:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 12:13:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 12:13:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 12:13:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 12:13:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 12:13:21,879 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 12:13:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 12:13:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 12:13:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 12:13:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 12:13:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 12:13:21,880 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 12:13:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 12:13:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 12:13:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 12:13:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 12:13:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 12:13:21,881 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 12:13:21,882 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 12:13:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 12:13:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 12:13:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2019-11-21 12:13:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 12:13:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 12:13:21,883 INFO L130 BoogieDeclarations]: Found specification of procedure delete_list [2019-11-21 12:13:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 12:13:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 12:13:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2019-11-21 12:13:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 12:13:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 12:13:21,885 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 12:13:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 12:13:21,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 12:13:22,891 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 12:13:22,891 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-21 12:13:22,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:13:22 BoogieIcfgContainer [2019-11-21 12:13:22,893 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 12:13:22,895 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 12:13:22,895 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 12:13:22,898 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 12:13:22,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:13:20" (1/3) ... [2019-11-21 12:13:22,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5935a83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:13:22, skipping insertion in model container [2019-11-21 12:13:22,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:13:21" (2/3) ... [2019-11-21 12:13:22,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5935a83b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:13:22, skipping insertion in model container [2019-11-21 12:13:22,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:13:22" (3/3) ... [2019-11-21 12:13:22,904 INFO L109 eAbstractionObserver]: Analyzing ICFG list_search-2.i [2019-11-21 12:13:22,913 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 12:13:22,926 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 32 error locations. [2019-11-21 12:13:22,940 INFO L249 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2019-11-21 12:13:22,966 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 12:13:22,967 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 12:13:22,967 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 12:13:22,967 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 12:13:22,967 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 12:13:22,968 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 12:13:22,968 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 12:13:22,973 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 12:13:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states. [2019-11-21 12:13:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 12:13:23,013 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:23,014 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:13:23,015 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 12:13:23,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:23,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2055481374, now seen corresponding path program 1 times [2019-11-21 12:13:23,036 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:23,037 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2130701473] [2019-11-21 12:13:23,037 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 12:13:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:23,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-21 12:13:23,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:23,475 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:13:23,476 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:23,484 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:23,484 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:23,484 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:13:23,504 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 12:13:23,505 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:23,523 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 12:13:23,524 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2130701473] [2019-11-21 12:13:23,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:13:23,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-21 12:13:23,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114317139] [2019-11-21 12:13:23,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 12:13:23,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:23,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 12:13:23,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 12:13:23,555 INFO L87 Difference]: Start difference. First operand 105 states. Second operand 3 states. [2019-11-21 12:13:23,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:23,766 INFO L93 Difference]: Finished difference Result 101 states and 110 transitions. [2019-11-21 12:13:23,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 12:13:23,769 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-21 12:13:23,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:23,780 INFO L225 Difference]: With dead ends: 101 [2019-11-21 12:13:23,780 INFO L226 Difference]: Without dead ends: 97 [2019-11-21 12:13:23,782 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 12:13:23,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2019-11-21 12:13:23,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2019-11-21 12:13:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-21 12:13:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2019-11-21 12:13:23,834 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 10 [2019-11-21 12:13:23,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:23,835 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2019-11-21 12:13:23,835 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 12:13:23,836 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2019-11-21 12:13:23,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 12:13:23,836 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:23,837 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:13:24,041 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:24,042 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 12:13:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:24,043 INFO L82 PathProgramCache]: Analyzing trace with hash -2055481373, now seen corresponding path program 1 times [2019-11-21 12:13:24,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:24,044 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1597848847] [2019-11-21 12:13:24,044 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 12:13:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:24,364 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 12:13:24,366 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:24,385 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 12:13:24,385 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:24,427 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 12:13:24,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1597848847] [2019-11-21 12:13:24,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:13:24,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-21 12:13:24,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110339052] [2019-11-21 12:13:24,431 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-21 12:13:24,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:24,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-21 12:13:24,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-21 12:13:24,432 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand 3 states. [2019-11-21 12:13:24,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:24,496 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2019-11-21 12:13:24,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 12:13:24,496 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-21 12:13:24,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:24,498 INFO L225 Difference]: With dead ends: 100 [2019-11-21 12:13:24,499 INFO L226 Difference]: Without dead ends: 100 [2019-11-21 12:13:24,499 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 12:13:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-11-21 12:13:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2019-11-21 12:13:24,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-21 12:13:24,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2019-11-21 12:13:24,521 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 10 [2019-11-21 12:13:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:24,523 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2019-11-21 12:13:24,523 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-21 12:13:24,523 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2019-11-21 12:13:24,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-21 12:13:24,524 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:24,524 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:13:24,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:24,739 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 12:13:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:24,739 INFO L82 PathProgramCache]: Analyzing trace with hash -2055481629, now seen corresponding path program 1 times [2019-11-21 12:13:24,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:24,740 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [918658672] [2019-11-21 12:13:24,740 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 12:13:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:25,053 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 12:13:25,055 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:25,068 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 12:13:25,068 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:25,079 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:25,080 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:25,080 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 12:13:25,094 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 12:13:25,094 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:25,131 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 12:13:25,132 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [918658672] [2019-11-21 12:13:25,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:13:25,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-21 12:13:25,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125032638] [2019-11-21 12:13:25,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-21 12:13:25,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:25,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-21 12:13:25,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-21 12:13:25,134 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand 4 states. [2019-11-21 12:13:25,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:25,411 INFO L93 Difference]: Finished difference Result 95 states and 104 transitions. [2019-11-21 12:13:25,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-21 12:13:25,413 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-21 12:13:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:25,414 INFO L225 Difference]: With dead ends: 95 [2019-11-21 12:13:25,415 INFO L226 Difference]: Without dead ends: 95 [2019-11-21 12:13:25,415 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 12:13:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-21 12:13:25,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-11-21 12:13:25,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-21 12:13:25,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 104 transitions. [2019-11-21 12:13:25,426 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 104 transitions. Word has length 10 [2019-11-21 12:13:25,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:25,426 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 104 transitions. [2019-11-21 12:13:25,426 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-21 12:13:25,426 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 104 transitions. [2019-11-21 12:13:25,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-21 12:13:25,428 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:25,428 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 12:13:25,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:25,633 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 12:13:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:25,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1345679994, now seen corresponding path program 1 times [2019-11-21 12:13:25,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:25,637 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1418022771] [2019-11-21 12:13:25,637 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 12:13:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:26,038 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 12:13:26,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:26,056 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 12:13:26,056 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:26,060 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:26,060 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:26,061 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:13:26,088 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 12:13:26,089 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:26,189 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 12:13:26,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1418022771] [2019-11-21 12:13:26,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:13:26,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 12:13:26,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551753310] [2019-11-21 12:13:26,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 12:13:26,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 12:13:26,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 12:13:26,192 INFO L87 Difference]: Start difference. First operand 95 states and 104 transitions. Second operand 5 states. [2019-11-21 12:13:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:26,664 INFO L93 Difference]: Finished difference Result 122 states and 135 transitions. [2019-11-21 12:13:26,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-21 12:13:26,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2019-11-21 12:13:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:26,668 INFO L225 Difference]: With dead ends: 122 [2019-11-21 12:13:26,668 INFO L226 Difference]: Without dead ends: 122 [2019-11-21 12:13:26,669 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 12:13:26,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-11-21 12:13:26,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 97. [2019-11-21 12:13:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2019-11-21 12:13:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2019-11-21 12:13:26,679 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 44 [2019-11-21 12:13:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:26,680 INFO L462 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2019-11-21 12:13:26,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 12:13:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2019-11-21 12:13:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-21 12:13:26,681 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:26,681 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 12:13:26,886 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:26,887 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 12:13:26,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:26,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1345679993, now seen corresponding path program 1 times [2019-11-21 12:13:26,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:26,889 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [420003393] [2019-11-21 12:13:26,889 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 12:13:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:27,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-21 12:13:27,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:27,375 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 12:13:27,376 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:27,385 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:27,386 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:27,386 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 12:13:27,426 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 12:13:27,426 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:27,656 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 12:13:27,656 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [420003393] [2019-11-21 12:13:27,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:13:27,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-21 12:13:27,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598737859] [2019-11-21 12:13:27,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 12:13:27,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:27,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 12:13:27,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-21 12:13:27,659 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 8 states. [2019-11-21 12:13:28,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:28,738 INFO L93 Difference]: Finished difference Result 142 states and 156 transitions. [2019-11-21 12:13:28,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 12:13:28,739 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2019-11-21 12:13:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:28,741 INFO L225 Difference]: With dead ends: 142 [2019-11-21 12:13:28,741 INFO L226 Difference]: Without dead ends: 142 [2019-11-21 12:13:28,741 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 12:13:28,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-21 12:13:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 108. [2019-11-21 12:13:28,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-21 12:13:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 127 transitions. [2019-11-21 12:13:28,751 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 127 transitions. Word has length 44 [2019-11-21 12:13:28,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:28,752 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 127 transitions. [2019-11-21 12:13:28,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 12:13:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 127 transitions. [2019-11-21 12:13:28,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-11-21 12:13:28,754 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:28,754 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 12:13:28,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:28,965 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 12:13:28,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:28,966 INFO L82 PathProgramCache]: Analyzing trace with hash -2017097475, now seen corresponding path program 1 times [2019-11-21 12:13:28,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:28,967 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [150586596] [2019-11-21 12:13:28,967 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 12:13:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:29,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-21 12:13:29,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:29,328 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 12:13:29,329 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:29,388 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 12:13:29,389 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [150586596] [2019-11-21 12:13:29,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:13:29,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-11-21 12:13:29,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432672793] [2019-11-21 12:13:29,390 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 12:13:29,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:29,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 12:13:29,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 12:13:29,391 INFO L87 Difference]: Start difference. First operand 108 states and 127 transitions. Second operand 5 states. [2019-11-21 12:13:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:29,597 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2019-11-21 12:13:29,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 12:13:29,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-11-21 12:13:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:29,601 INFO L225 Difference]: With dead ends: 127 [2019-11-21 12:13:29,601 INFO L226 Difference]: Without dead ends: 127 [2019-11-21 12:13:29,601 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 12:13:29,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-11-21 12:13:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 108. [2019-11-21 12:13:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2019-11-21 12:13:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 124 transitions. [2019-11-21 12:13:29,611 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 124 transitions. Word has length 48 [2019-11-21 12:13:29,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:29,611 INFO L462 AbstractCegarLoop]: Abstraction has 108 states and 124 transitions. [2019-11-21 12:13:29,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 12:13:29,612 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 124 transitions. [2019-11-21 12:13:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-21 12:13:29,613 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:29,614 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 12:13:29,816 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:29,817 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 12:13:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 72082182, now seen corresponding path program 1 times [2019-11-21 12:13:29,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:29,818 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [700258840] [2019-11-21 12:13:29,818 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 12:13:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:30,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 20 conjunts are in the unsatisfiable core [2019-11-21 12:13:30,312 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:30,320 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 12:13:30,320 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,322 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:30,322 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,323 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:13:30,368 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 12:13:30,369 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,378 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:30,379 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,379 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-21 12:13:30,463 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:30,463 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 12:13:30,469 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,493 INFO L567 ElimStorePlain]: treesize reduction 26, result has 40.9 percent of original size [2019-11-21 12:13:30,494 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,494 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:18 [2019-11-21 12:13:30,546 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 12:13:30,547 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:30,554 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:30,555 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 12:13:30,555 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:13 [2019-11-21 12:13:30,616 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 12:13:30,617 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:31,046 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 12:13:31,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [700258840] [2019-11-21 12:13:31,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 12:13:31,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 16 [2019-11-21 12:13:31,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563601934] [2019-11-21 12:13:31,050 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-21 12:13:31,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:31,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-21 12:13:31,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2019-11-21 12:13:31,052 INFO L87 Difference]: Start difference. First operand 108 states and 124 transitions. Second operand 17 states. [2019-11-21 12:13:32,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:13:32,723 INFO L93 Difference]: Finished difference Result 135 states and 148 transitions. [2019-11-21 12:13:32,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-11-21 12:13:32,724 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 47 [2019-11-21 12:13:32,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:13:32,726 INFO L225 Difference]: With dead ends: 135 [2019-11-21 12:13:32,726 INFO L226 Difference]: Without dead ends: 135 [2019-11-21 12:13:32,727 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=603, Unknown=0, NotChecked=0, Total=756 [2019-11-21 12:13:32,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2019-11-21 12:13:32,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 114. [2019-11-21 12:13:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-21 12:13:32,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2019-11-21 12:13:32,735 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 47 [2019-11-21 12:13:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:13:32,736 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2019-11-21 12:13:32,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-21 12:13:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2019-11-21 12:13:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-21 12:13:32,738 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:13:32,738 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 12:13:32,942 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:13:32,943 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 12:13:32,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:13:32,944 INFO L82 PathProgramCache]: Analyzing trace with hash 72082183, now seen corresponding path program 1 times [2019-11-21 12:13:32,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:13:32,946 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [310509453] [2019-11-21 12:13:32,946 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 12:13:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:13:33,459 INFO L255 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 31 conjunts are in the unsatisfiable core [2019-11-21 12:13:33,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:13:33,479 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 12:13:33,480 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,489 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,493 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 12:13:33,494 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,513 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,513 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,514 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 12:13:33,620 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 12:13:33,620 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,645 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,659 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 12:13:33,660 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,679 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,679 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,679 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:33 [2019-11-21 12:13:33,786 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,787 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 12:13:33,787 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,815 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,824 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 18 treesize of output 20 [2019-11-21 12:13:33,825 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,845 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:33,845 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:13:33,846 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:33 [2019-11-21 12:13:33,996 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 12:13:33,997 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:34,015 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:34,021 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 12:13:34,022 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:13:34,039 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:13:34,041 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 12:13:34,043 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:46, output treesize:20 [2019-11-21 12:13:34,217 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 12:13:34,217 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:13:35,081 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2019-11-21 12:13:35,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:13:39,737 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 12:13:40,133 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 12:13:40,490 WARN L192 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-21 12:13:40,500 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:13:40,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2019-11-21 12:13:41,128 WARN L192 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-11-21 12:13:56,200 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 12:13:56,200 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [310509453] [2019-11-21 12:13:56,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 12:13:56,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-21 12:13:56,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387835645] [2019-11-21 12:13:56,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-21 12:13:56,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:13:56,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-21 12:13:56,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=394, Unknown=2, NotChecked=0, Total=462 [2019-11-21 12:13:56,203 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand 22 states. [2019-11-21 12:14:00,059 WARN L192 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2019-11-21 12:14:01,675 WARN L192 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-11-21 12:14:04,436 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-11-21 12:14:12,521 WARN L192 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-11-21 12:14:13,586 WARN L192 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2019-11-21 12:14:14,705 WARN L192 SmtUtils]: Spent 357.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2019-11-21 12:14:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:14:15,262 INFO L93 Difference]: Finished difference Result 145 states and 158 transitions. [2019-11-21 12:14:15,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-11-21 12:14:15,264 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2019-11-21 12:14:15,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:14:15,266 INFO L225 Difference]: With dead ends: 145 [2019-11-21 12:14:15,266 INFO L226 Difference]: Without dead ends: 145 [2019-11-21 12:14:15,268 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=284, Invalid=1196, Unknown=2, NotChecked=0, Total=1482 [2019-11-21 12:14:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-21 12:14:15,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2019-11-21 12:14:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-11-21 12:14:15,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 130 transitions. [2019-11-21 12:14:15,275 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 130 transitions. Word has length 47 [2019-11-21 12:14:15,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:14:15,276 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 130 transitions. [2019-11-21 12:14:15,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-21 12:14:15,276 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 130 transitions. [2019-11-21 12:14:15,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 12:14:15,278 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:14:15,278 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 12:14:15,482 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:14:15,483 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 12:14:15,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:14:15,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1755324029, now seen corresponding path program 1 times [2019-11-21 12:14:15,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:14:15,485 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [248509221] [2019-11-21 12:14:15,485 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 12:14:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:14:15,924 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-21 12:14:15,927 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:14:15,935 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 12:14:15,935 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:15,936 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:15,937 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:14:15,937 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:14:15,956 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 12:14:15,956 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:14:16,021 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 12:14:16,021 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [248509221] [2019-11-21 12:14:16,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:14:16,021 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 12:14:16,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126545269] [2019-11-21 12:14:16,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 12:14:16,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:14:16,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 12:14:16,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 12:14:16,022 INFO L87 Difference]: Start difference. First operand 114 states and 130 transitions. Second operand 5 states. [2019-11-21 12:14:16,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:14:16,385 INFO L93 Difference]: Finished difference Result 131 states and 142 transitions. [2019-11-21 12:14:16,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 12:14:16,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-11-21 12:14:16,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:14:16,388 INFO L225 Difference]: With dead ends: 131 [2019-11-21 12:14:16,388 INFO L226 Difference]: Without dead ends: 131 [2019-11-21 12:14:16,388 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 12:14:16,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-11-21 12:14:16,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 119. [2019-11-21 12:14:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-21 12:14:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 139 transitions. [2019-11-21 12:14:16,394 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 139 transitions. Word has length 51 [2019-11-21 12:14:16,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:14:16,395 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 139 transitions. [2019-11-21 12:14:16,395 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 12:14:16,395 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 139 transitions. [2019-11-21 12:14:16,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-21 12:14:16,397 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:14:16,397 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 12:14:16,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:14:16,602 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 12:14:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:14:16,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1755324030, now seen corresponding path program 1 times [2019-11-21 12:14:16,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:14:16,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1703126766] [2019-11-21 12:14:16,604 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 12:14:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:14:17,033 INFO L255 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-21 12:14:17,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:14:17,081 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 12:14:17,082 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:17,087 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:17,088 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:14:17,088 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2019-11-21 12:14:17,159 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 12:14:17,160 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:17,162 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:17,162 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 12:14:17,162 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:4 [2019-11-21 12:14:17,192 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 12:14:17,193 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:14:17,504 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 12:14:17,505 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1703126766] [2019-11-21 12:14:17,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-21 12:14:17,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 17 [2019-11-21 12:14:17,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084264848] [2019-11-21 12:14:17,506 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-11-21 12:14:17,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:14:17,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-11-21 12:14:17,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-11-21 12:14:17,507 INFO L87 Difference]: Start difference. First operand 119 states and 139 transitions. Second operand 17 states. [2019-11-21 12:14:18,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:14:18,890 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2019-11-21 12:14:18,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-21 12:14:18,890 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2019-11-21 12:14:18,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:14:18,892 INFO L225 Difference]: With dead ends: 142 [2019-11-21 12:14:18,892 INFO L226 Difference]: Without dead ends: 142 [2019-11-21 12:14:18,893 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 12:14:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-21 12:14:18,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 119. [2019-11-21 12:14:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2019-11-21 12:14:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2019-11-21 12:14:18,898 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 51 [2019-11-21 12:14:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:14:18,899 INFO L462 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2019-11-21 12:14:18,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-11-21 12:14:18,899 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2019-11-21 12:14:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-11-21 12:14:18,900 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:14:18,901 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 12:14:19,104 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:14:19,105 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 12:14:19,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:14:19,106 INFO L82 PathProgramCache]: Analyzing trace with hash -83321466, now seen corresponding path program 2 times [2019-11-21 12:14:19,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:14:19,107 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [136188963] [2019-11-21 12:14:19,107 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 12:14:19,622 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-21 12:14:19,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-21 12:14:19,627 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 43 conjunts are in the unsatisfiable core [2019-11-21 12:14:19,629 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:14:19,638 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 12:14:19,638 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:19,640 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:19,640 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:14:19,640 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:14:19,682 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 12:14:19,683 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:19,694 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:19,695 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:14:19,695 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:24 [2019-11-21 12:14:19,765 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:19,766 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 12:14:19,766 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:19,793 INFO L567 ElimStorePlain]: treesize reduction 26, result has 50.0 percent of original size [2019-11-21 12:14:19,794 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:14:19,794 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:26 [2019-11-21 12:14:19,930 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_175|], 2=[|v_#memory_$Pointer$.base_183|]} [2019-11-21 12:14:19,939 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 12:14:19,939 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:20,020 INFO L567 ElimStorePlain]: treesize reduction 5, result has 91.5 percent of original size [2019-11-21 12:14:20,026 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 12:14:20,061 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:20,062 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 12:14:20,062 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:63, output treesize:54 [2019-11-21 12:14:22,017 WARN L192 SmtUtils]: Spent 1.92 s on a formula simplification that was a NOOP. DAG size: 35 [2019-11-21 12:14:23,962 WARN L192 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 33 [2019-11-21 12:14:24,034 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:24,035 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 12:14:24,036 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:24,173 WARN L192 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2019-11-21 12:14:24,174 INFO L567 ElimStorePlain]: treesize reduction 40, result has 64.9 percent of original size [2019-11-21 12:14:24,180 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 12:14:24,197 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 12:14:24,198 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:24,221 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:24,221 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:14:24,296 INFO L567 ElimStorePlain]: treesize reduction 4, result has 94.5 percent of original size [2019-11-21 12:14:24,296 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 12:14:24,297 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:70, output treesize:79 [2019-11-21 12:14:24,468 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 12:14:24,468 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:14:24,495 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:24,496 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 12:14:24,496 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:94, output treesize:83 [2019-11-21 12:14:24,632 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:24,633 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 12:14:24,634 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 12:14:24,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-21 12:14:24,635 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 12:14:24,673 INFO L567 ElimStorePlain]: treesize reduction 4, result has 88.9 percent of original size [2019-11-21 12:14:24,674 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 12:14:24,675 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:84, output treesize:32 [2019-11-21 12:14:24,785 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 12:14:24,785 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:14:25,372 WARN L192 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-11-21 12:14:25,482 WARN L192 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-21 12:14:25,673 WARN L192 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2019-11-21 12:14:25,822 WARN L192 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2019-11-21 12:14:25,830 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 12:14:25,855 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:14:25,856 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 12:14:25,856 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:45, output treesize:45 [2019-11-21 12:14:37,034 WARN L192 SmtUtils]: Spent 1.45 s on a formula simplification that was a NOOP. DAG size: 30 [2019-11-21 12:14:49,653 WARN L192 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2019-11-21 12:15:00,356 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2019-11-21 12:15:15,689 WARN L192 SmtUtils]: Spent 4.24 s on a formula simplification that was a NOOP. DAG size: 47 [2019-11-21 12:15:15,696 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 12:15:20,029 WARN L192 SmtUtils]: Spent 4.33 s on a formula simplification that was a NOOP. DAG size: 53 [2019-11-21 12:15:20,030 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:15:20,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:15:20,233 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 12:15:20,240 INFO L168 Benchmark]: Toolchain (without parser) took 119587.99 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 336.6 MB). Free memory was 952.3 MB in the beginning and 1.3 GB in the end (delta: -370.7 MB). Peak memory consumption was 462.1 MB. Max. memory is 11.5 GB. [2019-11-21 12:15:20,240 INFO L168 Benchmark]: CDTParser took 0.21 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 12:15:20,241 INFO L168 Benchmark]: CACSL2BoogieTranslator took 968.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -149.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-11-21 12:15:20,241 INFO L168 Benchmark]: Boogie Preprocessor took 152.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. [2019-11-21 12:15:20,241 INFO L168 Benchmark]: RCFGBuilder took 1115.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.2 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. [2019-11-21 12:15:20,242 INFO L168 Benchmark]: TraceAbstraction took 117343.46 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 178.8 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -309.2 MB). Peak memory consumption was 365.7 MB. Max. memory is 11.5 GB. [2019-11-21 12:15:20,244 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 968.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.8 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -149.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 152.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.4 MB). Peak memory consumption was 6.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1115.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 81.2 MB). Peak memory consumption was 81.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 117343.46 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 178.8 MB). Free memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: -309.2 MB). Peak memory consumption was 365.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported: (forall ((v_DerPreprocessor_3 (_ BitVec 32))) (exists ((|v_insert_list_#t~malloc37.base_101| (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32))) (let ((.cse0 (store (select |#memory_$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...