./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b5699aa Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 702f633b7e7ff05b6cbb070b8858a8adcd841273 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:55:11,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:55:11,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:55:11,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:55:11,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:55:11,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:55:11,331 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:55:11,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:55:11,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:55:11,346 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:55:11,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:55:11,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:55:11,348 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:55:11,349 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:55:11,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:55:11,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:55:11,352 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:55:11,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:55:11,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:55:11,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:55:11,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:55:11,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:55:11,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:55:11,375 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:55:11,382 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:55:11,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:55:11,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:55:11,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:55:11,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:55:11,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:55:11,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:55:11,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:55:11,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:55:11,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:55:11,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:55:11,390 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:55:11,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:55:11,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:55:11,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:55:11,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:55:11,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:55:11,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-11-26 02:55:11,413 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:55:11,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:55:11,415 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:55:11,415 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:55:11,415 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:55:11,416 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:55:11,416 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:55:11,416 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:55:11,416 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:55:11,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-26 02:55:11,418 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-26 02:55:11,418 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:55:11,418 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:55:11,419 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-26 02:55:11,419 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:55:11,419 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:55:11,419 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:55:11,419 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-26 02:55:11,420 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-26 02:55:11,420 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-26 02:55:11,420 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:55:11,420 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:55:11,421 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:55:11,421 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:11,421 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:55:11,421 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:55:11,421 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:55:11,422 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:55:11,422 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:55:11,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:55:11,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:55:11,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:55:11,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:55:11,423 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:55:11,423 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:55:11,424 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:55:11,424 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_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan 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 -> Taipan 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 -> 702f633b7e7ff05b6cbb070b8858a8adcd841273 [2019-11-26 02:55:11,566 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:55:11,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:55:11,579 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:55:11,580 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:55:11,581 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:55:11,581 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2019-11-26 02:55:11,638 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/data/fce042ca5/bba97ea2737d4ca4814d0cb9345e0976/FLAG5ddb032d8 [2019-11-26 02:55:12,121 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:55:12,121 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2019-11-26 02:55:12,147 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/data/fce042ca5/bba97ea2737d4ca4814d0cb9345e0976/FLAG5ddb032d8 [2019-11-26 02:55:12,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/data/fce042ca5/bba97ea2737d4ca4814d0cb9345e0976 [2019-11-26 02:55:12,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:55:12,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:55:12,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:55:12,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:55:12,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:55:12,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:55:12" (1/1) ... [2019-11-26 02:55:12,658 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3088dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:12, skipping insertion in model container [2019-11-26 02:55:12,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:55:12" (1/1) ... [2019-11-26 02:55:12,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:55:12,712 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:55:13,164 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,164 INFO L968 CHandler]: at location: C: (struct ldv_msg*)ldv_malloc(sizeof(struct ldv_msg)) [576] [2019-11-26 02:55:13,164 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,175 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,175 INFO L968 CHandler]: at location: C: (typeof(*msg) *)( (char *)__mptr - ((size_t) &((typeof(*msg) *)0)->list) ) [607] [2019-11-26 02:55:13,176 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,178 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,178 INFO L968 CHandler]: at location: C: (typeof(*(msg)) *)( (char *)__mptr - ((size_t) &((typeof(*(msg)) *)0)->list) ) [607] [2019-11-26 02:55:13,178 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,180 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,181 INFO L968 CHandler]: at location: C: (typeof(*(n)) *)( (char *)__mptr - ((size_t) &((typeof(*(n)) *)0)->list) ) [607] [2019-11-26 02:55:13,181 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,202 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,203 INFO L968 CHandler]: at location: C: (struct ldv_kobject *)( (char *)__mptr - ((size_t) &((struct ldv_kobject *)0)->kref) ) [706] [2019-11-26 02:55:13,203 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,212 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,213 INFO L968 CHandler]: at location: C: (struct A21*)ldv_malloc(sizeof(struct A21)) [762] [2019-11-26 02:55:13,213 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,216 INFO L965 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-26 02:55:13,216 INFO L968 CHandler]: at location: C: (struct A21 *)( (char *)__mptr - ((size_t) &((struct A21 *)0)->dev) ) [771] [2019-11-26 02:55:13,216 INFO L969 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-26 02:55:13,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:13,237 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-26 02:55:13,247 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:55:13,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:13,302 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:55:13,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:55:13,446 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:55:13,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13 WrapperNode [2019-11-26 02:55:13,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:55:13,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:55:13,450 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:55:13,450 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:55:13,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,521 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:55:13,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:55:13,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:55:13,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:55:13,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... [2019-11-26 02:55:13,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:55:13,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:55:13,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:55:13,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:55:13,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-26 02:55:13,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:55:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-26 02:55:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-26 02:55:13,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:55:13,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:55:14,002 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:55:14,002 INFO L284 CfgBuilder]: Removed 12 assume(true) statements. [2019-11-26 02:55:14,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:14 BoogieIcfgContainer [2019-11-26 02:55:14,003 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:55:14,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:55:14,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:55:14,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:55:14,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:55:12" (1/3) ... [2019-11-26 02:55:14,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f95b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:55:14, skipping insertion in model container [2019-11-26 02:55:14,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:55:13" (2/3) ... [2019-11-26 02:55:14,010 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f95b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:55:14, skipping insertion in model container [2019-11-26 02:55:14,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:14" (3/3) ... [2019-11-26 02:55:14,012 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test21-2.i [2019-11-26 02:55:14,022 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:55:14,027 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2019-11-26 02:55:14,037 INFO L249 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2019-11-26 02:55:14,056 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:55:14,057 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-26 02:55:14,057 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:55:14,057 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:55:14,057 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:55:14,058 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:55:14,058 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:55:14,058 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:55:14,074 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-11-26 02:55:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:55:14,081 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:14,082 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:14,083 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:14,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:14,090 INFO L82 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2019-11-26 02:55:14,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:14,101 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1683694412] [2019-11-26 02:55:14,101 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:14,242 INFO L255 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:55:14,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:14,315 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:14,342 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1683694412] [2019-11-26 02:55:14,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:14,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-26 02:55:14,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614815325] [2019-11-26 02:55:14,347 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:55:14,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:14,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:55:14,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:55:14,365 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 7 states. [2019-11-26 02:55:14,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:14,525 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2019-11-26 02:55:14,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:55:14,527 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2019-11-26 02:55:14,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:14,539 INFO L225 Difference]: With dead ends: 32 [2019-11-26 02:55:14,539 INFO L226 Difference]: Without dead ends: 26 [2019-11-26 02:55:14,542 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:55:14,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-26 02:55:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2019-11-26 02:55:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:55:14,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-26 02:55:14,572 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-26 02:55:14,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:14,572 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-26 02:55:14,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:55:14,573 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-26 02:55:14,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:55:14,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:14,573 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:14,776 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:14,776 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:14,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:14,777 INFO L82 PathProgramCache]: Analyzing trace with hash 119443402, now seen corresponding path program 1 times [2019-11-26 02:55:14,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:14,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1643164707] [2019-11-26 02:55:14,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:14,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:55:14,852 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:14,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:14,874 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:14,877 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1643164707] [2019-11-26 02:55:14,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:14,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-26 02:55:14,877 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910330813] [2019-11-26 02:55:14,879 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:55:14,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:14,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:55:14,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:55:14,879 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2019-11-26 02:55:14,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:14,913 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-26 02:55:14,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:55:14,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-26 02:55:14,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:14,914 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:55:14,915 INFO L226 Difference]: Without dead ends: 29 [2019-11-26 02:55:14,915 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:55:14,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-26 02:55:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2019-11-26 02:55:14,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:55:14,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-26 02:55:14,920 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2019-11-26 02:55:14,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:14,920 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-26 02:55:14,920 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:55:14,920 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-26 02:55:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:55:14,921 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:14,921 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:15,121 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:15,122 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:15,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:15,122 INFO L82 PathProgramCache]: Analyzing trace with hash 176701704, now seen corresponding path program 1 times [2019-11-26 02:55:15,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:15,123 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1259357913] [2019-11-26 02:55:15,123 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:15,207 INFO L255 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:55:15,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:15,230 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:15,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:15,235 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1259357913] [2019-11-26 02:55:15,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:15,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-26 02:55:15,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127031077] [2019-11-26 02:55:15,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:55:15,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:15,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:55:15,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:55:15,237 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2019-11-26 02:55:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:15,267 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-26 02:55:15,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:55:15,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-26 02:55:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:15,269 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:55:15,270 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:55:15,270 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:55:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:55:15,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-26 02:55:15,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-26 02:55:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-11-26 02:55:15,273 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2019-11-26 02:55:15,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:15,273 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-11-26 02:55:15,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:55:15,273 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-11-26 02:55:15,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-26 02:55:15,274 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:15,274 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:15,474 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:15,475 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:15,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:15,475 INFO L82 PathProgramCache]: Analyzing trace with hash 176701963, now seen corresponding path program 1 times [2019-11-26 02:55:15,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:15,475 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1551100429] [2019-11-26 02:55:15,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:15,532 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2019-11-26 02:55:15,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:15,543 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:15,545 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1551100429] [2019-11-26 02:55:15,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:15,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-26 02:55:15,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7834350] [2019-11-26 02:55:15,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-26 02:55:15,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:15,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-26 02:55:15,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:55:15,547 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2019-11-26 02:55:15,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:15,566 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2019-11-26 02:55:15,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-26 02:55:15,566 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-11-26 02:55:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:15,567 INFO L225 Difference]: With dead ends: 26 [2019-11-26 02:55:15,567 INFO L226 Difference]: Without dead ends: 23 [2019-11-26 02:55:15,567 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-26 02:55:15,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-26 02:55:15,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2019-11-26 02:55:15,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-26 02:55:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2019-11-26 02:55:15,570 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2019-11-26 02:55:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:15,570 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2019-11-26 02:55:15,570 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-26 02:55:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2019-11-26 02:55:15,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:55:15,570 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:15,570 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:15,771 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:15,771 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2019-11-26 02:55:15,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:15,772 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [777013919] [2019-11-26 02:55:15,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:15,893 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-26 02:55:15,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:16,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:16,017 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:16,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:16,117 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [777013919] [2019-11-26 02:55:16,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:16,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2019-11-26 02:55:16,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274831645] [2019-11-26 02:55:16,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-26 02:55:16,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:16,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-26 02:55:16,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-26 02:55:16,120 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 13 states. [2019-11-26 02:55:16,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:16,369 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-26 02:55:16,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:55:16,370 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 9 [2019-11-26 02:55:16,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:16,371 INFO L225 Difference]: With dead ends: 13 [2019-11-26 02:55:16,371 INFO L226 Difference]: Without dead ends: 13 [2019-11-26 02:55:16,372 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2019-11-26 02:55:16,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-11-26 02:55:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-11-26 02:55:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-11-26 02:55:16,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2019-11-26 02:55:16,374 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 9 [2019-11-26 02:55:16,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:16,374 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2019-11-26 02:55:16,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-26 02:55:16,374 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2019-11-26 02:55:16,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:55:16,375 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:16,375 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:16,579 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:16,579 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:16,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:16,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2019-11-26 02:55:16,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:16,580 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [981968014] [2019-11-26 02:55:16,580 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:16,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:55:16,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:16,706 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 [2019-11-26 02:55:16,707 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-26 02:55:16,718 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-26 02:55:16,718 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-26 02:55:16,719 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-26 02:55:16,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:16,774 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:16,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:16,781 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [981968014] [2019-11-26 02:55:16,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:16,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-26 02:55:16,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138775090] [2019-11-26 02:55:16,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:55:16,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:16,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:55:16,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:55:16,784 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2019-11-26 02:55:16,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:16,934 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-26 02:55:16,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:55:16,934 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-26 02:55:16,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:16,935 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:55:16,935 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:55:16,935 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:55:16,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:55:16,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 02:55:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:55:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-26 02:55:16,938 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2019-11-26 02:55:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:16,938 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-26 02:55:16,939 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:55:16,939 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-26 02:55:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:55:16,939 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:16,939 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:17,140 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:17,140 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:17,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:17,140 INFO L82 PathProgramCache]: Analyzing trace with hash -2045610900, now seen corresponding path program 1 times [2019-11-26 02:55:17,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:17,141 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1199976594] [2019-11-26 02:55:17,141 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:17,209 INFO L255 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-26 02:55:17,210 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:17,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:17,280 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:17,283 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1199976594] [2019-11-26 02:55:17,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:17,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2019-11-26 02:55:17,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747143555] [2019-11-26 02:55:17,284 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:55:17,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:17,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:55:17,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:55:17,285 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2019-11-26 02:55:17,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:17,376 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2019-11-26 02:55:17,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:55:17,376 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2019-11-26 02:55:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:17,376 INFO L225 Difference]: With dead ends: 21 [2019-11-26 02:55:17,377 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:55:17,377 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2019-11-26 02:55:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:55:17,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 12. [2019-11-26 02:55:17,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:55:17,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-11-26 02:55:17,379 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-11-26 02:55:17,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:17,379 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-11-26 02:55:17,379 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:55:17,379 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-11-26 02:55:17,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:55:17,380 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:17,380 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:17,580 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:17,581 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:17,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:17,581 INFO L82 PathProgramCache]: Analyzing trace with hash 330513232, now seen corresponding path program 1 times [2019-11-26 02:55:17,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:17,582 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [755019173] [2019-11-26 02:55:17,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:17,690 INFO L255 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:55:17,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:19,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:19,816 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:28,044 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [755019173] [2019-11-26 02:55:28,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:28,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2019-11-26 02:55:28,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869078491] [2019-11-26 02:55:28,044 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:55:28,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:28,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:55:28,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=170, Unknown=5, NotChecked=0, Total=210 [2019-11-26 02:55:28,045 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 15 states. [2019-11-26 02:55:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:32,383 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2019-11-26 02:55:32,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:55:32,383 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 11 [2019-11-26 02:55:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:32,383 INFO L225 Difference]: With dead ends: 20 [2019-11-26 02:55:32,384 INFO L226 Difference]: Without dead ends: 12 [2019-11-26 02:55:32,384 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=87, Invalid=288, Unknown=5, NotChecked=0, Total=380 [2019-11-26 02:55:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-11-26 02:55:32,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-11-26 02:55:32,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-11-26 02:55:32,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2019-11-26 02:55:32,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 11 [2019-11-26 02:55:32,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:32,386 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2019-11-26 02:55:32,386 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:55:32,386 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2019-11-26 02:55:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-26 02:55:32,387 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:55:32,387 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:55:32,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:32,588 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-26 02:55:32,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:55:32,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1010571602, now seen corresponding path program 1 times [2019-11-26 02:55:32,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:55:32,588 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [484084795] [2019-11-26 02:55:32,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/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 [2019-11-26 02:55:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:55:32,679 INFO L255 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-26 02:55:32,679 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:55:32,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:32,694 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:55:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:55:32,697 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [484084795] [2019-11-26 02:55:32,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:55:32,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-26 02:55:32,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915258378] [2019-11-26 02:55:32,697 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:55:32,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:55:32,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:55:32,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:55:32,698 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 4 states. [2019-11-26 02:55:32,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:55:32,714 INFO L93 Difference]: Finished difference Result 5 states and 4 transitions. [2019-11-26 02:55:32,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-26 02:55:32,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-26 02:55:32,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:55:32,715 INFO L225 Difference]: With dead ends: 5 [2019-11-26 02:55:32,715 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:55:32,715 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:55:32,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:55:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:55:32,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:55:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:55:32,715 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-11-26 02:55:32,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:55:32,715 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:55:32,715 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:55:32,716 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:55:32,716 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:55:32,916 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:55:32,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:55:32 BoogieIcfgContainer [2019-11-26 02:55:32,920 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:55:32,921 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:55:32,921 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:55:32,921 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:55:32,921 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:55:14" (3/4) ... [2019-11-26 02:55:32,923 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:55:32,937 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2019-11-26 02:55:32,937 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:55:32,938 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-11-26 02:55:32,979 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8b257abc-4fe1-48bc-bb0f-5a03eac348d3/bin/utaipan/witness.graphml [2019-11-26 02:55:32,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:55:32,981 INFO L168 Benchmark]: Toolchain (without parser) took 20329.47 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 940.7 MB in the beginning and 1.0 GB in the end (delta: -76.3 MB). Peak memory consumption was 54.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:32,982 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-11-26 02:55:32,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 796.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -140.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:32,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.12 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. [2019-11-26 02:55:32,983 INFO L168 Benchmark]: Boogie Preprocessor took 25.12 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. [2019-11-26 02:55:32,983 INFO L168 Benchmark]: RCFGBuilder took 456.74 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:32,984 INFO L168 Benchmark]: TraceAbstraction took 18916.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:32,984 INFO L168 Benchmark]: Witness Printer took 59.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-26 02:55:32,986 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 796.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.5 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -140.0 MB). Peak memory consumption was 18.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 71.12 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. * Boogie Preprocessor took 25.12 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 456.74 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: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18916.36 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 34.7 MB). Peak memory consumption was 34.7 MB. Max. memory is 11.5 GB. * Witness Printer took 59.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 779]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Result: SAFE, OverallTime: 18.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 232 SDslu, 208 SDs, 0 SdLazy, 250 SolverSat, 11 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 173 GetRequests, 101 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 11.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 37 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 10.9s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 148 ConstructedInterpolants, 2 QuantifiedInterpolants, 4842 SizeOfPredicates, 56 NumberOfNonLiveVariables, 396 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...