./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 678e0110 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i -s /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b7a6c79ad5924d178a48cf0cbbdc1138caa9a120 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_insert_~head.base_BEFORE_CALL_6 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_dll_insert_~head.offset_BEFORE_CALL_4 (_ BitVec 32))) (exists ((v_node_create_~temp~0.offset_26 (_ BitVec 32)) (|v_node_create_#t~malloc2.base_17| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (and (= (select |old(#valid)| |v_node_create_#t~malloc2.base_17|) (_ bv0 1)) (bvslt |v_node_create_#t~malloc2.base_17| |#StackHeapBarrier|) (not (= (_ bv1 1) (select (store |old(#valid)| |v_node_create_#t~malloc2.base_17| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17| (store (store (store (select |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17|) (bvadd v_node_create_~temp~0.offset_26 (_ bv4 32)) (_ bv0 32)) (bvadd v_node_create_~temp~0.offset_26 (_ bv8 32)) (_ bv0 32)) v_node_create_~temp~0.offset_26 v_DerPreprocessor_1)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4))))) (= (bvadd (select |#valid| (select (select (store |#memory_$Pointer$.base| node_create_~temp~0.base (store (select |#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset v_DerPreprocessor_2)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4)) (_ bv1 1)) (_ bv0 1))))) --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 10:26:24,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:26:24,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:26:24,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:26:24,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:26:24,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:26:24,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:26:24,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:26:24,079 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:26:24,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:26:24,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:26:24,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:26:24,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:26:24,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:26:24,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:26:24,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:26:24,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:26:24,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:26:24,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:26:24,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:26:24,102 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:26:24,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:26:24,105 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:26:24,105 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:26:24,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:26:24,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:26:24,109 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:26:24,111 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:26:24,111 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:26:24,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:26:24,113 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:26:24,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:26:24,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:26:24,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:26:24,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:26:24,116 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:26:24,117 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:26:24,117 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:26:24,117 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:26:24,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:26:24,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:26:24,120 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2019-11-20 10:26:24,145 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:26:24,155 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:26:24,156 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:26:24,156 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:26:24,157 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:26:24,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:26:24,157 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:26:24,157 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-20 10:26:24,158 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:26:24,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:26:24,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:26:24,158 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-20 10:26:24,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-20 10:26:24,159 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-20 10:26:24,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:26:24,159 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 10:26:24,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 10:26:24,159 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:26:24,161 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:26:24,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:26:24,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:26:24,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:26:24,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:26:24,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:26:24,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:26:24,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:26:24,163 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 10:26:24,163 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 10:26:24,163 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 10:26:24,163 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7a6c79ad5924d178a48cf0cbbdc1138caa9a120 [2019-11-20 10:26:24,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:26:24,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:26:24,310 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:26:24,311 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:26:24,312 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:26:24,312 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/../../sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2019-11-20 10:26:24,360 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/data/be5fbaf1b/51737d5c221f4df395c33fc23fcf8839/FLAG3ad8a6e1e [2019-11-20 10:26:24,790 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:26:24,790 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/sv-benchmarks/c/list-simple/dll2n_insert_unequal.i [2019-11-20 10:26:24,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/data/be5fbaf1b/51737d5c221f4df395c33fc23fcf8839/FLAG3ad8a6e1e [2019-11-20 10:26:24,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/data/be5fbaf1b/51737d5c221f4df395c33fc23fcf8839 [2019-11-20 10:26:24,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:26:24,812 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-20 10:26:24,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:26:24,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:26:24,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:26:24,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:26:24" (1/1) ... [2019-11-20 10:26:24,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23c4e7d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:24, skipping insertion in model container [2019-11-20 10:26:24,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:26:24" (1/1) ... [2019-11-20 10:26:24,827 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:26:24,865 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:26:25,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:26:25,294 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:26:25,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:26:25,414 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:26:25,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25 WrapperNode [2019-11-20 10:26:25,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:26:25,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:26:25,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:26:25,415 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:26:25,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,426 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,466 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,476 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... [2019-11-20 10:26:25,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:26:25,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:26:25,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:26:25,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:26:25,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:26:25,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-20 10:26:25,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:26:25,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-20 10:26:25,540 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-20 10:26:25,540 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-20 10:26:25,540 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-11-20 10:26:25,540 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-11-20 10:26:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_destroy [2019-11-20 10:26:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_insert [2019-11-20 10:26:25,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-20 10:26:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-20 10:26:25,541 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-20 10:26:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-20 10:26:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-20 10:26:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-20 10:26:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-20 10:26:25,542 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-20 10:26:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-20 10:26:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-20 10:26:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-20 10:26:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-20 10:26:25,543 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-20 10:26:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-20 10:26:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-20 10:26:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-20 10:26:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-20 10:26:25,544 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-20 10:26:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-20 10:26:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-20 10:26:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-20 10:26:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-20 10:26:25,545 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-20 10:26:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-20 10:26:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-20 10:26:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-20 10:26:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-20 10:26:25,546 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-20 10:26:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-20 10:26:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-20 10:26:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-20 10:26:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-20 10:26:25,547 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-20 10:26:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-20 10:26:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-20 10:26:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-20 10:26:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-20 10:26:25,548 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-20 10:26:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-20 10:26:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-20 10:26:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-20 10:26:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-20 10:26:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-20 10:26:25,549 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-20 10:26:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-20 10:26:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-20 10:26:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-20 10:26:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-20 10:26:25,550 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-20 10:26:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-20 10:26:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-20 10:26:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-20 10:26:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-20 10:26:25,551 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-20 10:26:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-20 10:26:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-20 10:26:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-20 10:26:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-20 10:26:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-20 10:26:25,552 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-20 10:26:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-20 10:26:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-20 10:26:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-20 10:26:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-20 10:26:25,553 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-20 10:26:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-20 10:26:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-20 10:26:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-20 10:26:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-20 10:26:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-20 10:26:25,554 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-20 10:26:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-20 10:26:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-20 10:26:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-20 10:26:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-20 10:26:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-20 10:26:25,555 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-20 10:26:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-20 10:26:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-20 10:26:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-20 10:26:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-20 10:26:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-20 10:26:25,556 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-20 10:26:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-20 10:26:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-20 10:26:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-20 10:26:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-20 10:26:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-20 10:26:25,557 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-20 10:26:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-20 10:26:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-20 10:26:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-20 10:26:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-20 10:26:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-20 10:26:25,558 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-20 10:26:25,559 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-20 10:26:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-20 10:26:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-20 10:26:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-20 10:26:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-20 10:26:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-20 10:26:25,560 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-20 10:26:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-11-20 10:26:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-20 10:26:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-20 10:26:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-20 10:26:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-11-20 10:26:25,561 INFO L130 BoogieDeclarations]: Found specification of procedure dll_destroy [2019-11-20 10:26:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-20 10:26:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-20 10:26:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure dll_insert [2019-11-20 10:26:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-20 10:26:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-20 10:26:25,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-20 10:26:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-20 10:26:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-20 10:26:25,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:26:26,000 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-20 10:26:26,652 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:26:26,652 INFO L285 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-20 10:26:26,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:26:26 BoogieIcfgContainer [2019-11-20 10:26:26,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:26:26,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:26:26,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:26:26,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:26:26,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:26:24" (1/3) ... [2019-11-20 10:26:26,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdee077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:26:26, skipping insertion in model container [2019-11-20 10:26:26,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:26:25" (2/3) ... [2019-11-20 10:26:26,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdee077 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:26:26, skipping insertion in model container [2019-11-20 10:26:26,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:26:26" (3/3) ... [2019-11-20 10:26:26,672 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_insert_unequal.i [2019-11-20 10:26:26,683 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:26:26,691 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 60 error locations. [2019-11-20 10:26:26,701 INFO L249 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2019-11-20 10:26:26,729 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:26:26,729 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-20 10:26:26,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:26:26,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:26:26,730 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:26:26,730 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:26:26,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:26:26,732 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:26:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states. [2019-11-20 10:26:26,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:26:26,770 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:26,771 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:26,772 INFO L410 AbstractCegarLoop]: === Iteration 1 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:26,777 INFO L82 PathProgramCache]: Analyzing trace with hash -485580583, now seen corresponding path program 1 times [2019-11-20 10:26:26,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:26,788 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [273563589] [2019-11-20 10:26:26,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:27,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:27,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 10:26:27,036 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:27,082 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 [2019-11-20 10:26:27,083 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:27,095 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:27,095 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:26:27,096 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 10:26:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:27,105 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:27,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:27,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [273563589] [2019-11-20 10:26:27,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:27,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 10:26:27,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759298352] [2019-11-20 10:26:27,122 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:26:27,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:27,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:26:27,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:26:27,138 INFO L87 Difference]: Start difference. First operand 152 states. Second operand 3 states. [2019-11-20 10:26:27,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:27,506 INFO L93 Difference]: Finished difference Result 153 states and 167 transitions. [2019-11-20 10:26:27,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:26:27,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-11-20 10:26:27,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:27,519 INFO L225 Difference]: With dead ends: 153 [2019-11-20 10:26:27,519 INFO L226 Difference]: Without dead ends: 145 [2019-11-20 10:26:27,522 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:26:27,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-20 10:26:27,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 141. [2019-11-20 10:26:27,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-20 10:26:27,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2019-11-20 10:26:27,564 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 11 [2019-11-20 10:26:27,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:27,564 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2019-11-20 10:26:27,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:26:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2019-11-20 10:26:27,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-20 10:26:27,565 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:27,565 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:27,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:27,769 INFO L410 AbstractCegarLoop]: === Iteration 2 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:27,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:27,770 INFO L82 PathProgramCache]: Analyzing trace with hash -485580582, now seen corresponding path program 1 times [2019-11-20 10:26:27,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:27,771 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1086571408] [2019-11-20 10:26:27,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:27,974 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:26:27,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:27,991 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 [2019-11-20 10:26:27,992 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:27,999 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:27,999 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:26:28,000 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 10:26:28,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:28,010 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:28,049 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1086571408] [2019-11-20 10:26:28,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:28,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 10:26:28,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086890689] [2019-11-20 10:26:28,051 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:26:28,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:28,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:26:28,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:26:28,052 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 4 states. [2019-11-20 10:26:28,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:28,720 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2019-11-20 10:26:28,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:26:28,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-20 10:26:28,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:28,722 INFO L225 Difference]: With dead ends: 142 [2019-11-20 10:26:28,722 INFO L226 Difference]: Without dead ends: 142 [2019-11-20 10:26:28,723 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:26:28,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-20 10:26:28,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 138. [2019-11-20 10:26:28,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-20 10:26:28,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2019-11-20 10:26:28,736 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 11 [2019-11-20 10:26:28,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:28,736 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2019-11-20 10:26:28,736 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:26:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2019-11-20 10:26:28,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-20 10:26:28,737 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:28,738 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:28,948 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:28,949 INFO L410 AbstractCegarLoop]: === Iteration 3 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2029120930, now seen corresponding path program 1 times [2019-11-20 10:26:28,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:28,954 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [372875162] [2019-11-20 10:26:28,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:29,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 10:26:29,142 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:29,157 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:29,172 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [372875162] [2019-11-20 10:26:29,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:29,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-20 10:26:29,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072826446] [2019-11-20 10:26:29,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:26:29,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:29,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:26:29,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:26:29,174 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 3 states. [2019-11-20 10:26:29,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:29,255 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2019-11-20 10:26:29,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:26:29,256 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-11-20 10:26:29,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:29,257 INFO L225 Difference]: With dead ends: 148 [2019-11-20 10:26:29,257 INFO L226 Difference]: Without dead ends: 148 [2019-11-20 10:26:29,258 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:26:29,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-11-20 10:26:29,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 144. [2019-11-20 10:26:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 10:26:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 153 transitions. [2019-11-20 10:26:29,270 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 153 transitions. Word has length 15 [2019-11-20 10:26:29,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:29,270 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 153 transitions. [2019-11-20 10:26:29,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:26:29,270 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 153 transitions. [2019-11-20 10:26:29,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-20 10:26:29,271 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:29,271 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:29,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:29,475 INFO L410 AbstractCegarLoop]: === Iteration 4 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:29,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:29,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1015235332, now seen corresponding path program 1 times [2019-11-20 10:26:29,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:29,476 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2099636416] [2019-11-20 10:26:29,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:29,703 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:29,705 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:29,723 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:29,796 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2099636416] [2019-11-20 10:26:29,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:29,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-20 10:26:29,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433152508] [2019-11-20 10:26:29,797 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-20 10:26:29,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:29,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-20 10:26:29,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-20 10:26:29,798 INFO L87 Difference]: Start difference. First operand 144 states and 153 transitions. Second operand 7 states. [2019-11-20 10:26:29,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:29,890 INFO L93 Difference]: Finished difference Result 148 states and 156 transitions. [2019-11-20 10:26:29,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-20 10:26:29,894 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2019-11-20 10:26:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:29,895 INFO L225 Difference]: With dead ends: 148 [2019-11-20 10:26:29,895 INFO L226 Difference]: Without dead ends: 145 [2019-11-20 10:26:29,896 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:26:29,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-20 10:26:29,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 144. [2019-11-20 10:26:29,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 10:26:29,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2019-11-20 10:26:29,903 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 19 [2019-11-20 10:26:29,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:29,904 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2019-11-20 10:26:29,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-20 10:26:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2019-11-20 10:26:29,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-11-20 10:26:29,905 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:29,905 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:30,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:30,110 INFO L410 AbstractCegarLoop]: === Iteration 5 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:30,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:30,110 INFO L82 PathProgramCache]: Analyzing trace with hash 587949125, now seen corresponding path program 1 times [2019-11-20 10:26:30,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:30,111 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1419501537] [2019-11-20 10:26:30,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:30,379 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-20 10:26:30,381 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:30,394 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 [2019-11-20 10:26:30,394 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:30,404 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:30,407 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 [2019-11-20 10:26:30,408 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:30,419 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:30,420 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:26:30,420 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 10:26:30,463 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:30,464 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 11 treesize of output 15 [2019-11-20 10:26:30,464 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:30,477 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:30,482 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 14 treesize of output 16 [2019-11-20 10:26:30,483 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:30,494 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:30,495 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:26:30,495 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:20 [2019-11-20 10:26:30,545 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:30,545 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:30,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 10:26:30,896 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:30,897 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1419501537] [2019-11-20 10:26:30,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:26:30,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2019-11-20 10:26:30,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325732767] [2019-11-20 10:26:30,898 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-20 10:26:30,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:30,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-20 10:26:30,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-20 10:26:30,899 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 8 states. [2019-11-20 10:26:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:32,337 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2019-11-20 10:26:32,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-20 10:26:32,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2019-11-20 10:26:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:32,339 INFO L225 Difference]: With dead ends: 147 [2019-11-20 10:26:32,339 INFO L226 Difference]: Without dead ends: 147 [2019-11-20 10:26:32,340 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-11-20 10:26:32,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-20 10:26:32,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 142. [2019-11-20 10:26:32,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-20 10:26:32,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 150 transitions. [2019-11-20 10:26:32,348 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 150 transitions. Word has length 22 [2019-11-20 10:26:32,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:32,349 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 150 transitions. [2019-11-20 10:26:32,349 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-20 10:26:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 150 transitions. [2019-11-20 10:26:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-20 10:26:32,350 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:32,350 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:32,553 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:32,554 INFO L410 AbstractCegarLoop]: === Iteration 6 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:32,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:32,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1692351645, now seen corresponding path program 1 times [2019-11-20 10:26:32,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:32,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [700550047] [2019-11-20 10:26:32,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:32,779 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:26:32,781 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:32,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:32,825 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:32,958 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [700550047] [2019-11-20 10:26:32,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:26:32,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-11-20 10:26:32,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010675190] [2019-11-20 10:26:32,959 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-20 10:26:32,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-20 10:26:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-11-20 10:26:32,960 INFO L87 Difference]: Start difference. First operand 142 states and 150 transitions. Second operand 9 states. [2019-11-20 10:26:33,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:33,127 INFO L93 Difference]: Finished difference Result 154 states and 163 transitions. [2019-11-20 10:26:33,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 10:26:33,138 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2019-11-20 10:26:33,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:33,139 INFO L225 Difference]: With dead ends: 154 [2019-11-20 10:26:33,139 INFO L226 Difference]: Without dead ends: 151 [2019-11-20 10:26:33,139 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-20 10:26:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-11-20 10:26:33,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 144. [2019-11-20 10:26:33,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-20 10:26:33,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 152 transitions. [2019-11-20 10:26:33,147 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 152 transitions. Word has length 26 [2019-11-20 10:26:33,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:33,147 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 152 transitions. [2019-11-20 10:26:33,147 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-20 10:26:33,147 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 152 transitions. [2019-11-20 10:26:33,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:26:33,148 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:33,149 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:33,352 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:33,352 INFO L410 AbstractCegarLoop]: === Iteration 7 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:33,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:33,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1247605988, now seen corresponding path program 2 times [2019-11-20 10:26:33,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:33,353 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [31881325] [2019-11-20 10:26:33,353 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:33,522 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-11-20 10:26:33,522 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-20 10:26:33,524 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-20 10:26:33,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:33,533 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 [2019-11-20 10:26:33,533 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:33,535 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:33,535 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:26:33,535 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 10:26:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:26:33,553 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:26:33,569 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [31881325] [2019-11-20 10:26:33,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:33,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 10:26:33,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217884828] [2019-11-20 10:26:33,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 10:26:33,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 10:26:33,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:26:33,570 INFO L87 Difference]: Start difference. First operand 144 states and 152 transitions. Second operand 3 states. [2019-11-20 10:26:33,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:33,766 INFO L93 Difference]: Finished difference Result 141 states and 149 transitions. [2019-11-20 10:26:33,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:26:33,767 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2019-11-20 10:26:33,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:33,768 INFO L225 Difference]: With dead ends: 141 [2019-11-20 10:26:33,768 INFO L226 Difference]: Without dead ends: 141 [2019-11-20 10:26:33,768 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 10:26:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-20 10:26:33,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-11-20 10:26:33,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-20 10:26:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 149 transitions. [2019-11-20 10:26:33,775 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 149 transitions. Word has length 33 [2019-11-20 10:26:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:33,775 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 149 transitions. [2019-11-20 10:26:33,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 10:26:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 149 transitions. [2019-11-20 10:26:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-20 10:26:33,776 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:33,776 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:33,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:33,979 INFO L410 AbstractCegarLoop]: === Iteration 8 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:33,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:33,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1247605987, now seen corresponding path program 1 times [2019-11-20 10:26:33,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:33,980 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1201077632] [2019-11-20 10:26:33,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/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 [2019-11-20 10:26:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:34,144 INFO L255 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 10:26:34,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:34,163 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:34,177 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1201077632] [2019-11-20 10:26:34,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:26:34,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2019-11-20 10:26:34,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326059302] [2019-11-20 10:26:34,178 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:26:34,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:34,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:26:34,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:26:34,178 INFO L87 Difference]: Start difference. First operand 141 states and 149 transitions. Second operand 4 states. [2019-11-20 10:26:34,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:34,244 INFO L93 Difference]: Finished difference Result 141 states and 148 transitions. [2019-11-20 10:26:34,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-20 10:26:34,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-11-20 10:26:34,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:34,245 INFO L225 Difference]: With dead ends: 141 [2019-11-20 10:26:34,246 INFO L226 Difference]: Without dead ends: 141 [2019-11-20 10:26:34,246 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-20 10:26:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-11-20 10:26:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-11-20 10:26:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-11-20 10:26:34,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 148 transitions. [2019-11-20 10:26:34,251 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 148 transitions. Word has length 33 [2019-11-20 10:26:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:34,251 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 148 transitions. [2019-11-20 10:26:34,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:26:34,252 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 148 transitions. [2019-11-20 10:26:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-11-20 10:26:34,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:34,253 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:34,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:34,453 INFO L410 AbstractCegarLoop]: === Iteration 9 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:34,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:34,454 INFO L82 PathProgramCache]: Analyzing trace with hash 963599568, now seen corresponding path program 1 times [2019-11-20 10:26:34,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:34,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1180152639] [2019-11-20 10:26:34,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/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 [2019-11-20 10:26:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:34,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-20 10:26:34,678 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:34,693 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 [2019-11-20 10:26:34,693 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:34,698 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:34,698 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:26:34,698 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-20 10:26:34,704 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:26:34,705 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:34,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-20 10:26:34,748 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1180152639] [2019-11-20 10:26:34,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 10:26:34,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-11-20 10:26:34,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67995325] [2019-11-20 10:26:34,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-20 10:26:34,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:34,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-20 10:26:34,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:26:34,749 INFO L87 Difference]: Start difference. First operand 141 states and 148 transitions. Second operand 4 states. [2019-11-20 10:26:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:26:35,074 INFO L93 Difference]: Finished difference Result 138 states and 145 transitions. [2019-11-20 10:26:35,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 10:26:35,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2019-11-20 10:26:35,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:26:35,076 INFO L225 Difference]: With dead ends: 138 [2019-11-20 10:26:35,076 INFO L226 Difference]: Without dead ends: 138 [2019-11-20 10:26:35,076 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-11-20 10:26:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2019-11-20 10:26:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2019-11-20 10:26:35,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-20 10:26:35,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 145 transitions. [2019-11-20 10:26:35,080 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 145 transitions. Word has length 34 [2019-11-20 10:26:35,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:26:35,081 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 145 transitions. [2019-11-20 10:26:35,081 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-20 10:26:35,081 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 145 transitions. [2019-11-20 10:26:35,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 10:26:35,082 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:26:35,082 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:26:35,285 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:26:35,286 INFO L410 AbstractCegarLoop]: === Iteration 10 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:26:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:26:35,286 INFO L82 PathProgramCache]: Analyzing trace with hash 1767482702, now seen corresponding path program 1 times [2019-11-20 10:26:35,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:26:35,287 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [471578718] [2019-11-20 10:26:35,287 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/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 [2019-11-20 10:26:35,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:26:35,731 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-20 10:26:35,734 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:26:35,747 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 [2019-11-20 10:26:35,747 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:35,749 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:35,750 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:26:35,750 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-20 10:26:35,899 INFO L343 Elim1Store]: treesize reduction 27, result has 57.1 percent of original size [2019-11-20 10:26:35,899 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 49 [2019-11-20 10:26:35,900 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:35,927 INFO L567 ElimStorePlain]: treesize reduction 17, result has 54.1 percent of original size [2019-11-20 10:26:35,927 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 10:26:35,928 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:20 [2019-11-20 10:26:36,120 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:26:36,121 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 52 [2019-11-20 10:26:36,121 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:26:36,169 INFO L567 ElimStorePlain]: treesize reduction 28, result has 41.7 percent of original size [2019-11-20 10:26:36,170 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 10:26:36,170 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:23, output treesize:20 [2019-11-20 10:26:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:26:36,200 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:26:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-20 10:26:57,730 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [471578718] [2019-11-20 10:26:57,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-20 10:26:57,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2019-11-20 10:26:57,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749607646] [2019-11-20 10:26:57,732 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-20 10:26:57,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:26:57,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-20 10:26:57,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=216, Unknown=4, NotChecked=0, Total=272 [2019-11-20 10:26:57,735 INFO L87 Difference]: Start difference. First operand 138 states and 145 transitions. Second operand 10 states. [2019-11-20 10:28:01,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:28:01,072 INFO L93 Difference]: Finished difference Result 145 states and 153 transitions. [2019-11-20 10:28:01,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-20 10:28:01,073 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2019-11-20 10:28:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:28:01,074 INFO L225 Difference]: With dead ends: 145 [2019-11-20 10:28:01,074 INFO L226 Difference]: Without dead ends: 145 [2019-11-20 10:28:01,075 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 61 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 23.8s TimeCoverageRelationStatistics Valid=72, Invalid=304, Unknown=4, NotChecked=0, Total=380 [2019-11-20 10:28:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2019-11-20 10:28:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 131. [2019-11-20 10:28:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-11-20 10:28:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 138 transitions. [2019-11-20 10:28:01,079 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 138 transitions. Word has length 41 [2019-11-20 10:28:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:28:01,079 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 138 transitions. [2019-11-20 10:28:01,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-20 10:28:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 138 transitions. [2019-11-20 10:28:01,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-20 10:28:01,080 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:28:01,081 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:28:01,281 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:28:01,281 INFO L410 AbstractCegarLoop]: === Iteration 11 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:28:01,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:28:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1767482703, now seen corresponding path program 1 times [2019-11-20 10:28:01,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:28:01,282 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1981869785] [2019-11-20 10:28:01,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/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 [2019-11-20 10:28:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:28:01,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-20 10:28:01,716 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:28:01,723 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 [2019-11-20 10:28:01,723 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:28:01,729 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:28:01,733 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 [2019-11-20 10:28:01,733 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 10:28:01,741 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:28:01,741 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-20 10:28:01,741 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-20 10:28:01,830 INFO L392 ElimStorePlain]: Different costs {2=[|v_old(#length)_AFTER_CALL_33|], 4=[|v_old(#valid)_AFTER_CALL_44|]} [2019-11-20 10:28:01,842 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:28:01,843 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:28:01,845 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:28:01,846 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2019-11-20 10:28:01,846 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:28:01,868 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:28:01,875 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:28:01,878 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:28:01,882 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:28:01,883 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 24 [2019-11-20 10:28:01,883 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 10:28:01,894 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:28:01,895 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 10:28:01,895 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:40, output treesize:25 [2019-11-20 10:28:02,176 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:28:02,176 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 5 case distinctions, treesize of input 26 treesize of output 92 [2019-11-20 10:28:02,177 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:28:02,254 INFO L567 ElimStorePlain]: treesize reduction 38, result has 51.3 percent of original size [2019-11-20 10:28:02,255 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:02,255 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 10:28:02,256 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:33, output treesize:40 [2019-11-20 10:28:02,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:02,829 WARN L191 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2019-11-20 10:28:02,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:28:02,887 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:28:03,172 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 10:28:09,099 WARN L191 SmtUtils]: Spent 1.46 s on a formula simplification that was a NOOP. DAG size: 22 [2019-11-20 10:28:11,139 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_dll_insert_~head.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_node_create_~temp~0.base_26 (_ BitVec 32)) (v_dll_insert_~head.base_BEFORE_CALL_4 (_ BitVec 32))) (let ((.cse0 (bvadd v_dll_insert_~head.offset_BEFORE_CALL_2 (_ bv4 32)))) (or (bvsle .cse0 (select (store |c_#length| v_node_create_~temp~0.base_26 (_ bv12 32)) v_dll_insert_~head.base_BEFORE_CALL_4)) (not (bvsle (_ bv0 32) v_dll_insert_~head.offset_BEFORE_CALL_2)) (exists ((v_node_create_~temp~0.base_25 (_ BitVec 32))) (not (bvsle (bvadd v_dll_insert_~head.offset_BEFORE_CALL_2 (_ bv4 32)) (select (store |c_old(#length)| v_node_create_~temp~0.base_25 (_ bv12 32)) v_dll_insert_~head.base_BEFORE_CALL_4)))) (not (bvsle v_dll_insert_~head.offset_BEFORE_CALL_2 .cse0))))) is different from false [2019-11-20 10:28:11,515 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 10:28:11,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-20 10:28:11,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,752 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,754 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:11,755 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-20 10:28:21,800 WARN L191 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 37 [2019-11-20 10:28:42,289 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 9 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:28:42,289 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1981869785] [2019-11-20 10:28:42,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-20 10:28:42,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2019-11-20 10:28:42,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336438938] [2019-11-20 10:28:42,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-11-20 10:28:42,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 10:28:42,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-11-20 10:28:42,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=349, Unknown=13, NotChecked=38, Total=462 [2019-11-20 10:28:42,291 INFO L87 Difference]: Start difference. First operand 131 states and 138 transitions. Second operand 22 states. [2019-11-20 10:28:58,418 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |dll_create_#t~malloc3.base| (_ bv12 32)) |c_#length|) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)) (= |c_#valid| (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1))))) (forall ((v_node_create_~temp~0.base_25 (_ BitVec 32)) (|v_main_~#s~0.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_main_~#s~0.offset_BEFORE_CALL_3| (_ BitVec 32)) (v_dll_create_~new_head~0.base_52 (_ BitVec 32))) (let ((.cse0 (bvadd |v_main_~#s~0.offset_BEFORE_CALL_3| (_ bv4 32)))) (or (not (= (select |c_#valid| v_dll_create_~new_head~0.base_52) (_ bv0 1))) (not (bvsle (_ bv0 32) |v_main_~#s~0.offset_BEFORE_CALL_3|)) (not (bvsle |v_main_~#s~0.offset_BEFORE_CALL_3| .cse0)) (exists ((v_prenex_7 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_prenex_6 (_ bv1 1)) v_prenex_7)) (= (select |c_old(#valid)| v_prenex_6) (_ bv0 1)) (not (bvsle (bvadd |v_main_~#s~0.offset_BEFORE_CALL_3| (_ bv4 32)) (select (store (store (store |c_old(#length)| v_prenex_6 (_ bv12 32)) v_prenex_7 (_ bv12 32)) v_prenex_5 (_ bv12 32)) |v_main_~#s~0.base_BEFORE_CALL_6|))))) (bvsle .cse0 (select (store (store |c_#length| v_dll_create_~new_head~0.base_52 (_ bv12 32)) v_node_create_~temp~0.base_25 (_ bv12 32)) |v_main_~#s~0.base_BEFORE_CALL_6|)))))) is different from false [2019-11-20 10:29:00,445 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_prenex_4 (_ BitVec 32)) (|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= (select |c_old(#valid)| v_prenex_4) (_ bv0 1)) (= (select (store |c_old(#valid)| v_prenex_4 (_ bv1 1)) |dll_create_#t~malloc3.base|) (_ bv0 1)) (= |c_#length| (store (store |c_old(#length)| v_prenex_4 (_ bv12 32)) |dll_create_#t~malloc3.base| (_ bv12 32))))) (forall ((v_node_create_~temp~0.base_25 (_ BitVec 32)) (|v_main_~#s~0.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_main_~#s~0.offset_BEFORE_CALL_3| (_ BitVec 32))) (let ((.cse0 (bvadd |v_main_~#s~0.offset_BEFORE_CALL_3| (_ bv4 32)))) (or (not (bvsle (_ bv0 32) |v_main_~#s~0.offset_BEFORE_CALL_3|)) (not (bvsle |v_main_~#s~0.offset_BEFORE_CALL_3| .cse0)) (exists ((v_prenex_7 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_prenex_6 (_ bv1 1)) v_prenex_7)) (= (select |c_old(#valid)| v_prenex_6) (_ bv0 1)) (not (bvsle (bvadd |v_main_~#s~0.offset_BEFORE_CALL_3| (_ bv4 32)) (select (store (store (store |c_old(#length)| v_prenex_6 (_ bv12 32)) v_prenex_7 (_ bv12 32)) v_prenex_5 (_ bv12 32)) |v_main_~#s~0.base_BEFORE_CALL_6|))))) (bvsle .cse0 (select (store |c_#length| v_node_create_~temp~0.base_25 (_ bv12 32)) |v_main_~#s~0.base_BEFORE_CALL_6|)))))) is different from false [2019-11-20 10:29:18,497 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((node_create_~temp~0.base (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| node_create_~temp~0.base (_ bv12 32)))) (= |c_#valid| |c_old(#valid)|) (= |c_old(#length)| |c_#length|) (forall ((v_dll_insert_~head.offset_BEFORE_CALL_2 (_ BitVec 32)) (v_node_create_~temp~0.base_26 (_ BitVec 32)) (v_dll_insert_~head.base_BEFORE_CALL_4 (_ BitVec 32))) (let ((.cse0 (bvadd v_dll_insert_~head.offset_BEFORE_CALL_2 (_ bv4 32)))) (or (bvsle .cse0 (select (store |c_#length| v_node_create_~temp~0.base_26 (_ bv12 32)) v_dll_insert_~head.base_BEFORE_CALL_4)) (not (bvsle (_ bv0 32) v_dll_insert_~head.offset_BEFORE_CALL_2)) (exists ((v_node_create_~temp~0.base_25 (_ BitVec 32))) (not (bvsle (bvadd v_dll_insert_~head.offset_BEFORE_CALL_2 (_ bv4 32)) (select (store |c_old(#length)| v_node_create_~temp~0.base_25 (_ bv12 32)) v_dll_insert_~head.base_BEFORE_CALL_4)))) (not (bvsle v_dll_insert_~head.offset_BEFORE_CALL_2 .cse0)))))) is different from false [2019-11-20 10:39:06,425 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd c_dll_insert_~head.offset (_ bv4 32)))) (and (forall ((v_node_create_~temp~0.base_25 (_ BitVec 32)) (v_dll_create_~new_head~0.base_53 (_ BitVec 32)) (|v_main_~#s~0.base_BEFORE_CALL_6| (_ BitVec 32)) (|v_main_~#s~0.offset_BEFORE_CALL_3| (_ BitVec 32)) (v_dll_create_~new_head~0.base_52 (_ BitVec 32))) (let ((.cse0 (bvadd |v_main_~#s~0.offset_BEFORE_CALL_3| (_ bv4 32)))) (or (not (bvsle (_ bv0 32) |v_main_~#s~0.offset_BEFORE_CALL_3|)) (not (bvsle |v_main_~#s~0.offset_BEFORE_CALL_3| .cse0)) (not (= (select (store |c_#valid| v_dll_create_~new_head~0.base_53 (_ bv1 1)) v_dll_create_~new_head~0.base_52) (_ bv0 1))) (exists ((v_prenex_7 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32)) (v_prenex_5 (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_old(#valid)| v_prenex_6 (_ bv1 1)) v_prenex_7)) (= (select |c_old(#valid)| v_prenex_6) (_ bv0 1)) (not (bvsle (bvadd |v_main_~#s~0.offset_BEFORE_CALL_3| (_ bv4 32)) (select (store (store (store |c_old(#length)| v_prenex_6 (_ bv12 32)) v_prenex_7 (_ bv12 32)) v_prenex_5 (_ bv12 32)) |v_main_~#s~0.base_BEFORE_CALL_6|))))) (not (= (select |c_#valid| v_dll_create_~new_head~0.base_53) (_ bv0 1))) (bvsle .cse0 (select (store (store (store |c_#length| v_dll_create_~new_head~0.base_53 (_ bv12 32)) v_dll_create_~new_head~0.base_52 (_ bv12 32)) v_node_create_~temp~0.base_25 (_ bv12 32)) |v_main_~#s~0.base_BEFORE_CALL_6|))))) (bvsle .cse1 (select |c_#length| c_dll_insert_~head.base)) (exists ((|dll_create_#t~malloc3.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |dll_create_#t~malloc3.base| (_ bv12 32)) |c_#length|) (= (select |c_old(#valid)| |dll_create_#t~malloc3.base|) (_ bv0 1)) (= |c_#valid| (store |c_old(#valid)| |dll_create_#t~malloc3.base| (_ bv1 1))))) (bvsle c_dll_insert_~head.offset .cse1) (bvsle (_ bv0 32) c_dll_insert_~head.offset))) is different from false [2019-11-20 10:39:30,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 10:39:30,001 INFO L93 Difference]: Finished difference Result 232 states and 249 transitions. [2019-11-20 10:39:30,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-20 10:39:30,003 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 41 [2019-11-20 10:39:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 10:39:30,006 INFO L225 Difference]: With dead ends: 232 [2019-11-20 10:39:30,006 INFO L226 Difference]: Without dead ends: 232 [2019-11-20 10:39:30,007 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 68.8s TimeCoverageRelationStatistics Valid=108, Invalid=485, Unknown=27, NotChecked=250, Total=870 [2019-11-20 10:39:30,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2019-11-20 10:39:30,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 191. [2019-11-20 10:39:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2019-11-20 10:39:30,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 231 transitions. [2019-11-20 10:39:30,022 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 231 transitions. Word has length 41 [2019-11-20 10:39:30,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 10:39:30,022 INFO L462 AbstractCegarLoop]: Abstraction has 191 states and 231 transitions. [2019-11-20 10:39:30,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-11-20 10:39:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 231 transitions. [2019-11-20 10:39:30,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-20 10:39:30,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:39:30,030 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-20 10:39:30,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:39:30,234 INFO L410 AbstractCegarLoop]: === Iteration 12 === [dll_createErr4REQUIRES_VIOLATION, dll_createErr2REQUIRES_VIOLATION, dll_createErr3REQUIRES_VIOLATION, dll_createErr1REQUIRES_VIOLATION, dll_createErr7REQUIRES_VIOLATION, dll_createErr6REQUIRES_VIOLATION, dll_createErr0REQUIRES_VIOLATION, dll_createErr5REQUIRES_VIOLATION, dll_insertErr20REQUIRES_VIOLATION, dll_insertErr9REQUIRES_VIOLATION, dll_insertErr19REQUIRES_VIOLATION, dll_insertErr8REQUIRES_VIOLATION, dll_insertErr18REQUIRES_VIOLATION, dll_insertErr23REQUIRES_VIOLATION, dll_insertErr12REQUIRES_VIOLATION, dll_insertErr1REQUIRES_VIOLATION, dll_insertErr22REQUIRES_VIOLATION, dll_insertErr0REQUIRES_VIOLATION, dll_insertErr11REQUIRES_VIOLATION, dll_insertErr21REQUIRES_VIOLATION, dll_insertErr10REQUIRES_VIOLATION, dll_insertErr15REQUIRES_VIOLATION, dll_insertErr4REQUIRES_VIOLATION, dll_insertErr14REQUIRES_VIOLATION, dll_insertErr3REQUIRES_VIOLATION, dll_insertErr13REQUIRES_VIOLATION, dll_insertErr2REQUIRES_VIOLATION, dll_insertErr7REQUIRES_VIOLATION, dll_insertErr17REQUIRES_VIOLATION, dll_insertErr6REQUIRES_VIOLATION, dll_insertErr16REQUIRES_VIOLATION, dll_insertErr5REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr16ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION, dll_destroyErr4ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr1REQUIRES_VIOLATION, dll_destroyErr0REQUIRES_VIOLATION, dll_destroyErr2ASSERT_VIOLATIONMEMORY_FREE, dll_destroyErr3ASSERT_VIOLATIONMEMORY_FREE, node_createErr1REQUIRES_VIOLATION, node_createErr5REQUIRES_VIOLATION, node_createErr0REQUIRES_VIOLATION, node_createErr4REQUIRES_VIOLATION, node_createErr2REQUIRES_VIOLATION, node_createErr3REQUIRES_VIOLATION]=== [2019-11-20 10:39:30,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:39:30,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1221868424, now seen corresponding path program 1 times [2019-11-20 10:39:30,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:39:30,235 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1429163853] [2019-11-20 10:39:30,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc210161-dd45-4443-ba41-4ea79ba93273/bin/uautomizer/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:39:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 10:39:30,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 32 conjunts are in the unsatisfiable core [2019-11-20 10:39:30,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 10:39:30,761 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:30,761 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 14 treesize of output 30 [2019-11-20 10:39:30,762 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:39:30,814 INFO L567 ElimStorePlain]: treesize reduction 14, result has 54.8 percent of original size [2019-11-20 10:39:30,814 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:30,815 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:20, output treesize:17 [2019-11-20 10:39:31,355 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 9 treesize of output 3 [2019-11-20 10:39:31,355 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:39:31,373 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:31,374 INFO L464 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.base_BEFORE_CALL_2| vanished before elimination [2019-11-20 10:39:31,374 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:31,375 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:13 [2019-11-20 10:39:44,998 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:44,999 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 23 treesize of output 61 [2019-11-20 10:39:44,999 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:39:45,139 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-11-20 10:39:45,140 INFO L567 ElimStorePlain]: treesize reduction 26, result has 70.8 percent of original size [2019-11-20 10:39:45,153 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:39:45,196 INFO L343 Elim1Store]: treesize reduction 82, result has 18.8 percent of original size [2019-11-20 10:39:45,196 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 2 case distinctions, treesize of input 43 treesize of output 35 [2019-11-20 10:39:45,197 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-20 10:39:45,252 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:45,253 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:45,253 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:63, output treesize:58 [2019-11-20 10:39:45,353 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-20 10:39:45,356 INFO L343 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2019-11-20 10:39:45,357 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 21 [2019-11-20 10:39:45,357 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-20 10:39:45,394 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:45,395 INFO L496 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:45,395 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:62, output treesize:27 [2019-11-20 10:39:45,542 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 10:39:45,543 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 10:39:45,908 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:45,929 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:45,929 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:45,930 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:49, output treesize:41 [2019-11-20 10:39:54,539 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-20 10:39:54,626 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-20 10:39:54,827 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-20 10:39:54,828 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_dll_insert_~head.base_BEFORE_CALL_6 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_dll_insert_~head.offset_BEFORE_CALL_4 (_ BitVec 32))) (exists ((v_node_create_~temp~0.offset_26 (_ BitVec 32)) (|v_node_create_#t~malloc2.base_17| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (and (= (select |old(#valid)| |v_node_create_#t~malloc2.base_17|) (_ bv0 1)) (bvslt |v_node_create_#t~malloc2.base_17| |#StackHeapBarrier|) (not (= (_ bv1 1) (select (store |old(#valid)| |v_node_create_#t~malloc2.base_17| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17| (store (store (store (select |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17|) (bvadd v_node_create_~temp~0.offset_26 (_ bv4 32)) (_ bv0 32)) (bvadd v_node_create_~temp~0.offset_26 (_ bv8 32)) (_ bv0 32)) v_node_create_~temp~0.offset_26 v_DerPreprocessor_1)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4))))) (= (bvadd (select |#valid| (select (select (store |#memory_$Pointer$.base| node_create_~temp~0.base (store (select |#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset v_DerPreprocessor_2)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4)) (_ bv1 1)) (_ bv0 1))))) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:667) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:493) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$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$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-20 10:39:54,833 INFO L168 Benchmark]: Toolchain (without parser) took 810020.15 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 172.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -204.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:39:54,833 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:39:54,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 601.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:54,834 INFO L168 Benchmark]: Boogie Preprocessor took 68.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:39:54,839 INFO L168 Benchmark]: RCFGBuilder took 1169.99 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 77.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. [2019-11-20 10:39:54,840 INFO L168 Benchmark]: TraceAbstraction took 808176.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.4 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -96.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:39:54,843 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 601.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 154.1 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -190.5 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.55 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1169.99 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: 77.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 808176.80 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.4 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -96.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_insert_~head.base_BEFORE_CALL_6 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_dll_insert_~head.offset_BEFORE_CALL_4 (_ BitVec 32))) (exists ((v_node_create_~temp~0.offset_26 (_ BitVec 32)) (|v_node_create_#t~malloc2.base_17| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (and (= (select |old(#valid)| |v_node_create_#t~malloc2.base_17|) (_ bv0 1)) (bvslt |v_node_create_#t~malloc2.base_17| |#StackHeapBarrier|) (not (= (_ bv1 1) (select (store |old(#valid)| |v_node_create_#t~malloc2.base_17| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17| (store (store (store (select |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17|) (bvadd v_node_create_~temp~0.offset_26 (_ bv4 32)) (_ bv0 32)) (bvadd v_node_create_~temp~0.offset_26 (_ bv8 32)) (_ bv0 32)) v_node_create_~temp~0.offset_26 v_DerPreprocessor_1)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4))))) (= (bvadd (select |#valid| (select (select (store |#memory_$Pointer$.base| node_create_~temp~0.base (store (select |#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset v_DerPreprocessor_2)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4)) (_ bv1 1)) (_ bv0 1))))) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: (forall ((v_dll_insert_~head.base_BEFORE_CALL_6 (_ BitVec 32)) (v_DerPreprocessor_2 (_ BitVec 32)) (v_dll_insert_~head.offset_BEFORE_CALL_4 (_ BitVec 32))) (exists ((v_node_create_~temp~0.offset_26 (_ BitVec 32)) (|v_node_create_#t~malloc2.base_17| (_ BitVec 32)) (v_DerPreprocessor_1 (_ BitVec 32))) (or (and (= (select |old(#valid)| |v_node_create_#t~malloc2.base_17|) (_ bv0 1)) (bvslt |v_node_create_#t~malloc2.base_17| |#StackHeapBarrier|) (not (= (_ bv1 1) (select (store |old(#valid)| |v_node_create_#t~malloc2.base_17| (_ bv1 1)) (select (select (store |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17| (store (store (store (select |old(#memory_$Pointer$.base)| |v_node_create_#t~malloc2.base_17|) (bvadd v_node_create_~temp~0.offset_26 (_ bv4 32)) (_ bv0 32)) (bvadd v_node_create_~temp~0.offset_26 (_ bv8 32)) (_ bv0 32)) v_node_create_~temp~0.offset_26 v_DerPreprocessor_1)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4))))) (= (bvadd (select |#valid| (select (select (store |#memory_$Pointer$.base| node_create_~temp~0.base (store (select |#memory_$Pointer$.base| node_create_~temp~0.base) node_create_~temp~0.offset v_DerPreprocessor_2)) v_dll_insert_~head.base_BEFORE_CALL_6) v_dll_insert_~head.offset_BEFORE_CALL_4)) (_ bv1 1)) (_ bv0 1))))): 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...