./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i --full-output --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 264dba86 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 69e4d0785323ca2fbac076cafe34fff682fc43d2 --cacsl2boogietranslator.adapt.memory.model.on.pointer.casts.if.necessary true .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: incompatible size --- Real Ultimate output --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-264dba8 [2019-11-21 12:11:07,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-21 12:11:07,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-21 12:11:07,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-21 12:11:07,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-21 12:11:07,114 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-21 12:11:07,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-21 12:11:07,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-21 12:11:07,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-21 12:11:07,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-21 12:11:07,133 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-21 12:11:07,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-21 12:11:07,136 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-21 12:11:07,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-21 12:11:07,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-21 12:11:07,145 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-21 12:11:07,146 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-21 12:11:07,149 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-21 12:11:07,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-21 12:11:07,158 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-21 12:11:07,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-21 12:11:07,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-21 12:11:07,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-21 12:11:07,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-21 12:11:07,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-21 12:11:07,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-21 12:11:07,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-21 12:11:07,174 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-21 12:11:07,174 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-21 12:11:07,176 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-21 12:11:07,176 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-21 12:11:07,177 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-21 12:11:07,178 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-21 12:11:07,179 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-21 12:11:07,180 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-21 12:11:07,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-21 12:11:07,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-21 12:11:07,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-21 12:11:07,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-21 12:11:07,186 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-21 12:11:07,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-21 12:11:07,189 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2019-11-21 12:11:07,208 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-21 12:11:07,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-21 12:11:07,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-21 12:11:07,210 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-21 12:11:07,210 INFO L138 SettingsManager]: * Use SBE=true [2019-11-21 12:11:07,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-21 12:11:07,211 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-21 12:11:07,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-21 12:11:07,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-21 12:11:07,211 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-21 12:11:07,212 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-21 12:11:07,213 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-21 12:11:07,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-21 12:11:07,213 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-21 12:11:07,214 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-21 12:11:07,214 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-21 12:11:07,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-21 12:11:07,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-21 12:11:07,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-21 12:11:07,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-21 12:11:07,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 12:11:07,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-21 12:11:07,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-21 12:11:07,216 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-21 12:11:07,216 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-21 12:11:07,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-21 12:11:07,216 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69e4d0785323ca2fbac076cafe34fff682fc43d2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Adapt memory model on pointer casts if necessary -> true [2019-11-21 12:11:07,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-21 12:11:07,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-21 12:11:07,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-21 12:11:07,555 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-21 12:11:07,556 INFO L275 PluginConnector]: CDTParser initialized [2019-11-21 12:11:07,557 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2019-11-21 12:11:07,627 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60b2fcd/6ed95b53807f4db08c9070f367868a76/FLAGdc687b693 [2019-11-21 12:11:08,110 INFO L306 CDTParser]: Found 1 translation units. [2019-11-21 12:11:08,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2019-11-21 12:11:08,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60b2fcd/6ed95b53807f4db08c9070f367868a76/FLAGdc687b693 [2019-11-21 12:11:08,436 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc60b2fcd/6ed95b53807f4db08c9070f367868a76 [2019-11-21 12:11:08,440 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-21 12:11:08,442 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-21 12:11:08,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-21 12:11:08,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-21 12:11:08,447 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-21 12:11:08,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:11:08" (1/1) ... [2019-11-21 12:11:08,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@468fa956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:08, skipping insertion in model container [2019-11-21 12:11:08,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:11:08" (1/1) ... [2019-11-21 12:11:08,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-21 12:11:08,511 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 12:11:08,916 INFO L966 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-21 12:11:08,917 INFO L969 CHandler]: at location: C: (int *)malloc(sizeof(int)) [518] [2019-11-21 12:11:08,917 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 12:11:08,919 INFO L966 CHandler]: Found a cast between two array/pointer types where the value type is smaller than the cast-to type, and where that value type is smaller than our current memory model resolution [2019-11-21 12:11:08,919 INFO L969 CHandler]: at location: C: (int *)malloc(sizeof(int)) [519] [2019-11-21 12:11:08,919 INFO L970 CHandler]: current memory model: HoenickeLindenmann_4ByteResolution [2019-11-21 12:11:08,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:11:08,950 INFO L198 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-11-21 12:11:08,957 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-21 12:11:08,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:11:08,992 INFO L201 MainTranslator]: Completed pre-run [2019-11-21 12:11:09,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-21 12:11:09,098 INFO L205 MainTranslator]: Completed translation [2019-11-21 12:11:09,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09 WrapperNode [2019-11-21 12:11:09,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-21 12:11:09,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-21 12:11:09,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-21 12:11:09,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-21 12:11:09,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,165 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... [2019-11-21 12:11:09,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-21 12:11:09,180 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-21 12:11:09,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-21 12:11:09,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-21 12:11:09,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-21 12:11:09,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-21 12:11:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-21 12:11:09,245 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-21 12:11:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-21 12:11:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-21 12:11:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-21 12:11:09,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-21 12:11:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_data [2019-11-21 12:11:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure free_data [2019-11-21 12:11:09,247 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-21 12:11:09,247 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-21 12:11:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-21 12:11:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-21 12:11:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-21 12:11:09,248 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-21 12:11:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-21 12:11:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-21 12:11:09,249 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-21 12:11:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-21 12:11:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-21 12:11:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-21 12:11:09,250 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-21 12:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-21 12:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-21 12:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-21 12:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-21 12:11:09,251 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-21 12:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-21 12:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-21 12:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-21 12:11:09,252 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-21 12:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-21 12:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-21 12:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-21 12:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-21 12:11:09,253 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-21 12:11:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-21 12:11:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-21 12:11:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-21 12:11:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-21 12:11:09,254 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-21 12:11:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-21 12:11:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-21 12:11:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-21 12:11:09,255 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-21 12:11:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-21 12:11:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-21 12:11:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-21 12:11:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-21 12:11:09,256 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-21 12:11:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-21 12:11:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-21 12:11:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-21 12:11:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-21 12:11:09,257 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-21 12:11:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-21 12:11:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-21 12:11:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-21 12:11:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-21 12:11:09,258 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-21 12:11:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-21 12:11:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-21 12:11:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-21 12:11:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-21 12:11:09,259 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-21 12:11:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-21 12:11:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-21 12:11:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-21 12:11:09,260 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-21 12:11:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-21 12:11:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-21 12:11:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-21 12:11:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-21 12:11:09,261 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-21 12:11:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-21 12:11:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-21 12:11:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-21 12:11:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-21 12:11:09,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-21 12:11:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-21 12:11:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-21 12:11:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-21 12:11:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-21 12:11:09,263 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-21 12:11:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-21 12:11:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-21 12:11:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-21 12:11:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-21 12:11:09,264 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-21 12:11:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-21 12:11:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-21 12:11:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-21 12:11:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-21 12:11:09,265 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-21 12:11:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-21 12:11:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-21 12:11:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-21 12:11:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-21 12:11:09,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-21 12:11:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-21 12:11:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-21 12:11:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-21 12:11:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-21 12:11:09,267 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-21 12:11:09,268 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-21 12:11:09,268 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-21 12:11:09,268 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-21 12:11:09,268 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-21 12:11:09,268 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-21 12:11:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-21 12:11:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-21 12:11:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-21 12:11:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-21 12:11:09,269 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-21 12:11:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-21 12:11:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-21 12:11:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-21 12:11:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-21 12:11:09,270 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_data [2019-11-21 12:11:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-21 12:11:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-21 12:11:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-21 12:11:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-21 12:11:09,271 INFO L130 BoogieDeclarations]: Found specification of procedure free_data [2019-11-21 12:11:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-21 12:11:09,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-21 12:11:09,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-21 12:11:09,273 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-21 12:11:09,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-21 12:11:09,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-21 12:11:10,044 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-21 12:11:10,046 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-21 12:11:10,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:11:10 BoogieIcfgContainer [2019-11-21 12:11:10,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-21 12:11:10,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-21 12:11:10,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-21 12:11:10,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-21 12:11:10,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:11:08" (1/3) ... [2019-11-21 12:11:10,065 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dba4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:11:10, skipping insertion in model container [2019-11-21 12:11:10,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:11:09" (2/3) ... [2019-11-21 12:11:10,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@399dba4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:11:10, skipping insertion in model container [2019-11-21 12:11:10,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:11:10" (3/3) ... [2019-11-21 12:11:10,069 INFO L109 eAbstractionObserver]: Analyzing ICFG test-0019_1-2.i [2019-11-21 12:11:10,080 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-21 12:11:10,091 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations. [2019-11-21 12:11:10,103 INFO L249 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2019-11-21 12:11:10,125 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-21 12:11:10,125 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-21 12:11:10,125 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-21 12:11:10,126 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-21 12:11:10,126 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-21 12:11:10,126 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-21 12:11:10,126 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-21 12:11:10,127 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-21 12:11:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-11-21 12:11:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-21 12:11:10,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:11:10,160 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:11:10,161 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr4REQUIRES_VIOLATION, alloc_dataErr9REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr8REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr7REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr6REQUIRES_VIOLATION, alloc_dataErr11REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr5REQUIRES_VIOLATION, alloc_dataErr10REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr15ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr16ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr17ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9REQUIRES_VIOLATION, free_dataErr8REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr14ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-21 12:11:10,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:11:10,166 INFO L82 PathProgramCache]: Analyzing trace with hash -1034402705, now seen corresponding path program 1 times [2019-11-21 12:11:10,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:11:10,178 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [861771535] [2019-11-21 12:11:10,179 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:11:10,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-21 12:11:10,451 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:11:10,525 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:10,526 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:10,537 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:10,538 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:10,538 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-21 12:11:10,601 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:10,602 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 [2019-11-21 12:11:10,605 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:10,633 INFO L567 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-11-21 12:11:10,635 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:10,635 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-11-21 12:11:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:10,667 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:11:10,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:10,694 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [861771535] [2019-11-21 12:11:10,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:11:10,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-11-21 12:11:10,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103046286] [2019-11-21 12:11:10,700 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-21 12:11:10,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:11:10,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-21 12:11:10,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-21 12:11:10,717 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 5 states. [2019-11-21 12:11:11,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:11:11,133 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2019-11-21 12:11:11,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 12:11:11,135 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-21 12:11:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:11:11,151 INFO L225 Difference]: With dead ends: 74 [2019-11-21 12:11:11,151 INFO L226 Difference]: Without dead ends: 71 [2019-11-21 12:11:11,154 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-21 12:11:11,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2019-11-21 12:11:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2019-11-21 12:11:11,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2019-11-21 12:11:11,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2019-11-21 12:11:11,194 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 9 [2019-11-21 12:11:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:11:11,195 INFO L462 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2019-11-21 12:11:11,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-21 12:11:11,195 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2019-11-21 12:11:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-21 12:11:11,196 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:11:11,196 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:11:11,399 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:11,407 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr4REQUIRES_VIOLATION, alloc_dataErr9REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr8REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr7REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr6REQUIRES_VIOLATION, alloc_dataErr11REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr5REQUIRES_VIOLATION, alloc_dataErr10REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr15ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr16ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr17ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9REQUIRES_VIOLATION, free_dataErr8REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr14ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-21 12:11:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:11:11,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1034402704, now seen corresponding path program 1 times [2019-11-21 12:11:11,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:11:11,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1322479531] [2019-11-21 12:11:11,409 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:11:11,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-21 12:11:11,611 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:11:11,623 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:11,623 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:11,632 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:11,638 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:11,639 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:11,646 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:11,646 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:11,647 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 12:11:11,708 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:11,709 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 13 treesize of output 17 [2019-11-21 12:11:11,710 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:11,725 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:11,734 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 12 treesize of output 14 [2019-11-21 12:11:11,735 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:11,764 INFO L567 ElimStorePlain]: treesize reduction 4, result has 77.8 percent of original size [2019-11-21 12:11:11,765 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. [2019-11-21 12:11:11,765 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:14 [2019-11-21 12:11:11,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:11,791 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:11:11,834 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:11:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:12,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1322479531] [2019-11-21 12:11:12,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:11:12,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-21 12:11:12,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385912770] [2019-11-21 12:11:12,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-21 12:11:12,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:11:12,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-21 12:11:12,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-21 12:11:12,080 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 8 states. [2019-11-21 12:11:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:11:13,049 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2019-11-21 12:11:13,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-21 12:11:13,049 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2019-11-21 12:11:13,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:11:13,051 INFO L225 Difference]: With dead ends: 68 [2019-11-21 12:11:13,051 INFO L226 Difference]: Without dead ends: 68 [2019-11-21 12:11:13,052 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-21 12:11:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-11-21 12:11:13,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2019-11-21 12:11:13,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-21 12:11:13,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2019-11-21 12:11:13,060 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 9 [2019-11-21 12:11:13,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:11:13,060 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2019-11-21 12:11:13,060 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-21 12:11:13,060 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2019-11-21 12:11:13,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-21 12:11:13,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:11:13,061 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:11:13,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:13,264 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr4REQUIRES_VIOLATION, alloc_dataErr9REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr8REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr7REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr6REQUIRES_VIOLATION, alloc_dataErr11REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr5REQUIRES_VIOLATION, alloc_dataErr10REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr15ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr16ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr17ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9REQUIRES_VIOLATION, free_dataErr8REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr14ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-21 12:11:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:11:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1923554319, now seen corresponding path program 1 times [2019-11-21 12:11:13,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:11:13,266 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [448201941] [2019-11-21 12:11:13,266 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:13,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:11:13,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-21 12:11:13,462 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:11:13,481 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:13,482 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,492 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,497 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:13,498 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,506 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,506 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,506 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2019-11-21 12:11:13,551 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:13,552 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 12 treesize of output 14 [2019-11-21 12:11:13,553 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,568 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,579 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:13,581 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-21 12:11:13,582 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,589 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,590 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. [2019-11-21 12:11:13,591 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:14 [2019-11-21 12:11:13,680 INFO L392 ElimStorePlain]: Different costs {1=[|v_#valid_76|], 3=[|v_#length_51|]} [2019-11-21 12:11:13,693 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,694 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 [2019-11-21 12:11:13,695 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,713 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,746 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:13,747 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 46 [2019-11-21 12:11:13,748 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:13,782 INFO L567 ElimStorePlain]: treesize reduction 28, result has 40.4 percent of original size [2019-11-21 12:11:13,784 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. [2019-11-21 12:11:13,784 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:32, output treesize:19 [2019-11-21 12:11:13,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:13,797 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:11:13,830 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:11:13,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:11:14,011 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:14,012 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 31 treesize of output 35 [2019-11-21 12:11:14,013 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:14,028 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:14,029 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 28 treesize of output 32 [2019-11-21 12:11:14,031 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:14,048 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:14,049 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 26 treesize of output 30 [2019-11-21 12:11:14,050 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:14,096 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:14,098 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 3 xjuncts. [2019-11-21 12:11:14,098 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:86, output treesize:53 [2019-11-21 12:11:14,227 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:11:14,453 WARN L192 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2019-11-21 12:11:14,647 WARN L192 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2019-11-21 12:11:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:14,664 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [448201941] [2019-11-21 12:11:14,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:11:14,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10 [2019-11-21 12:11:14,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109924029] [2019-11-21 12:11:14,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-21 12:11:14,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:11:14,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-21 12:11:14,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2019-11-21 12:11:14,666 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 11 states. [2019-11-21 12:11:15,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:11:15,695 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions. [2019-11-21 12:11:15,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-21 12:11:15,696 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2019-11-21 12:11:15,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:11:15,698 INFO L225 Difference]: With dead ends: 65 [2019-11-21 12:11:15,698 INFO L226 Difference]: Without dead ends: 65 [2019-11-21 12:11:15,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-11-21 12:11:15,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2019-11-21 12:11:15,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2019-11-21 12:11:15,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2019-11-21 12:11:15,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2019-11-21 12:11:15,706 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 11 [2019-11-21 12:11:15,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:11:15,706 INFO L462 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2019-11-21 12:11:15,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-21 12:11:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2019-11-21 12:11:15,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-21 12:11:15,707 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:11:15,707 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:11:15,910 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:15,911 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr4REQUIRES_VIOLATION, alloc_dataErr9REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr8REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr7REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr6REQUIRES_VIOLATION, alloc_dataErr11REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr5REQUIRES_VIOLATION, alloc_dataErr10REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr15ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr16ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr17ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9REQUIRES_VIOLATION, free_dataErr8REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr14ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-21 12:11:15,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:11:15,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1699764301, now seen corresponding path program 1 times [2019-11-21 12:11:15,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:11:15,914 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [138498154] [2019-11-21 12:11:15,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:11:16,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-21 12:11:16,101 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:11:16,126 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:16,126 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,135 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:16,136 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,136 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-21 12:11:16,164 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 12:11:16,164 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,182 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:16,184 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,184 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:27, output treesize:20 [2019-11-21 12:11:16,316 WARN L192 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2019-11-21 12:11:16,318 INFO L343 Elim1Store]: treesize reduction 12, result has 86.2 percent of original size [2019-11-21 12:11:16,318 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 91 [2019-11-21 12:11:16,320 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,373 INFO L567 ElimStorePlain]: treesize reduction 40, result has 46.7 percent of original size [2019-11-21 12:11:16,373 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,374 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:35 [2019-11-21 12:11:16,414 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:16,415 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2019-11-21 12:11:16,416 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,443 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:16,444 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:16,444 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:55 [2019-11-21 12:11:16,516 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 24 [2019-11-21 12:11:16,517 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:16,539 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:16,540 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:16,540 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:53, output treesize:28 [2019-11-21 12:11:16,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:16,572 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:11:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:16,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138498154] [2019-11-21 12:11:16,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:11:16,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 5] imperfect sequences [] total 12 [2019-11-21 12:11:16,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266351503] [2019-11-21 12:11:16,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 12:11:16,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:11:16,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 12:11:16,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-11-21 12:11:16,703 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 13 states. [2019-11-21 12:11:17,053 WARN L192 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 43 [2019-11-21 12:11:17,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:11:17,425 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2019-11-21 12:11:17,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 12:11:17,425 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2019-11-21 12:11:17,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:11:17,427 INFO L225 Difference]: With dead ends: 64 [2019-11-21 12:11:17,427 INFO L226 Difference]: Without dead ends: 64 [2019-11-21 12:11:17,427 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2019-11-21 12:11:17,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2019-11-21 12:11:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2019-11-21 12:11:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-11-21 12:11:17,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2019-11-21 12:11:17,434 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 13 [2019-11-21 12:11:17,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:11:17,434 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2019-11-21 12:11:17,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 12:11:17,434 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2019-11-21 12:11:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-21 12:11:17,435 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:11:17,435 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:11:17,645 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:17,645 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr4REQUIRES_VIOLATION, alloc_dataErr9REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr8REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr7REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr6REQUIRES_VIOLATION, alloc_dataErr11REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr5REQUIRES_VIOLATION, alloc_dataErr10REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr15ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr16ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr17ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9REQUIRES_VIOLATION, free_dataErr8REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr14ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-21 12:11:17,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:11:17,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1699764300, now seen corresponding path program 1 times [2019-11-21 12:11:17,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:11:17,646 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1284437392] [2019-11-21 12:11:17,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:17,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:11:17,855 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-21 12:11:17,857 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:11:17,872 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:17,873 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:17,884 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:17,888 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-21 12:11:17,888 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:17,908 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:17,909 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:17,909 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2019-11-21 12:11:17,965 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 12:11:17,966 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:17,993 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,001 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 12:11:18,001 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,020 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,021 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,021 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:40, output treesize:33 [2019-11-21 12:11:18,076 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,076 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 17 treesize of output 21 [2019-11-21 12:11:18,078 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,098 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,104 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2019-11-21 12:11:18,105 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,121 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,122 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,122 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:44, output treesize:33 [2019-11-21 12:11:18,171 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:18,173 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 0 case distinctions, treesize of input 31 treesize of output 26 [2019-11-21 12:11:18,174 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,212 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,218 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:18,219 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 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-21 12:11:18,220 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,245 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,246 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,246 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:45 [2019-11-21 12:11:18,293 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 18 [2019-11-21 12:11:18,294 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:18,319 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,324 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-21 12:11:18,325 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:18,342 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:18,342 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:18,343 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:52, output treesize:18 [2019-11-21 12:11:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:18,376 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:11:18,524 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-21 12:11:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:18,792 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1284437392] [2019-11-21 12:11:18,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-21 12:11:18,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 5] imperfect sequences [] total 12 [2019-11-21 12:11:18,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628312639] [2019-11-21 12:11:18,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-21 12:11:18,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-21 12:11:18,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-21 12:11:18,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2019-11-21 12:11:18,794 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 13 states. [2019-11-21 12:11:19,320 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-11-21 12:11:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-21 12:11:20,036 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2019-11-21 12:11:20,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-21 12:11:20,037 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2019-11-21 12:11:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-21 12:11:20,039 INFO L225 Difference]: With dead ends: 63 [2019-11-21 12:11:20,039 INFO L226 Difference]: Without dead ends: 63 [2019-11-21 12:11:20,040 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2019-11-21 12:11:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-11-21 12:11:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-11-21 12:11:20,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-11-21 12:11:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2019-11-21 12:11:20,046 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 13 [2019-11-21 12:11:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-21 12:11:20,047 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2019-11-21 12:11:20,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-21 12:11:20,047 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2019-11-21 12:11:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-21 12:11:20,047 INFO L402 BasicCegarLoop]: Found error trace [2019-11-21 12:11:20,048 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-21 12:11:20,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:20,251 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, alloc_dataErr4REQUIRES_VIOLATION, alloc_dataErr9REQUIRES_VIOLATION, alloc_dataErr3REQUIRES_VIOLATION, alloc_dataErr8REQUIRES_VIOLATION, alloc_dataErr2REQUIRES_VIOLATION, alloc_dataErr7REQUIRES_VIOLATION, alloc_dataErr1REQUIRES_VIOLATION, alloc_dataErr6REQUIRES_VIOLATION, alloc_dataErr11REQUIRES_VIOLATION, alloc_dataErr0REQUIRES_VIOLATION, alloc_dataErr5REQUIRES_VIOLATION, alloc_dataErr10REQUIRES_VIOLATION, free_dataErr7REQUIRES_VIOLATION, free_dataErr15ASSERT_VIOLATIONMEMORY_FREE, free_dataErr6REQUIRES_VIOLATION, free_dataErr16ASSERT_VIOLATIONMEMORY_FREE, free_dataErr5REQUIRES_VIOLATION, free_dataErr17ASSERT_VIOLATIONMEMORY_FREE, free_dataErr9REQUIRES_VIOLATION, free_dataErr8REQUIRES_VIOLATION, free_dataErr1REQUIRES_VIOLATION, free_dataErr11REQUIRES_VIOLATION, free_dataErr0REQUIRES_VIOLATION, free_dataErr10REQUIRES_VIOLATION, free_dataErr4REQUIRES_VIOLATION, free_dataErr14ASSERT_VIOLATIONMEMORY_FREE, free_dataErr3REQUIRES_VIOLATION, free_dataErr13ASSERT_VIOLATIONMEMORY_FREE, free_dataErr2REQUIRES_VIOLATION, free_dataErr12ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-21 12:11:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-21 12:11:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash -13867244, now seen corresponding path program 1 times [2019-11-21 12:11:20,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-21 12:11:20,254 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1546137694] [2019-11-21 12:11:20,254 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-21 12:11:20,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 18 conjunts are in the unsatisfiable core [2019-11-21 12:11:20,597 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-21 12:11:20,625 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-11-21 12:11:20,625 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,632 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:20,633 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,633 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2019-11-21 12:11:20,662 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:20,663 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 12 treesize of output 28 [2019-11-21 12:11:20,664 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,697 INFO L567 ElimStorePlain]: treesize reduction 14, result has 60.0 percent of original size [2019-11-21 12:11:20,697 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,697 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:21 [2019-11-21 12:11:20,723 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_34|], 2=[|v_#memory_$Pointer$.offset_33|]} [2019-11-21 12:11:20,729 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-21 12:11:20,729 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,754 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:20,763 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:20,764 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 0 case distinctions, treesize of input 21 treesize of output 20 [2019-11-21 12:11:20,765 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,782 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:20,783 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,783 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:49, output treesize:29 [2019-11-21 12:11:20,814 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-21 12:11:20,815 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,828 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:20,828 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,829 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:32 [2019-11-21 12:11:20,867 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:20,876 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:20,877 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-21 12:11:20,893 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:20,894 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 87 [2019-11-21 12:11:20,896 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,929 INFO L567 ElimStorePlain]: treesize reduction 24, result has 71.4 percent of original size [2019-11-21 12:11:20,929 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-21 12:11:20,930 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:103, output treesize:60 [2019-11-21 12:11:21,002 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:21,002 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 57 treesize of output 28 [2019-11-21 12:11:21,003 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-21 12:11:21,010 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-21 12:11:21,011 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:21,011 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:62, output treesize:13 [2019-11-21 12:11:21,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-21 12:11:21,047 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-21 12:11:21,110 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:21,189 INFO L567 ElimStorePlain]: treesize reduction 31, result has 68.7 percent of original size [2019-11-21 12:11:21,189 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-21 12:11:21,189 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:66, output treesize:68 [2019-11-21 12:11:32,083 WARN L192 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 30 [2019-11-21 12:11:34,091 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32))) (let ((.cse2 (select (select |c_#memory_$Pointer$.base| c_alloc_data_~pdata.base) c_alloc_data_~pdata.offset))) (let ((.cse3 (select |c_#memory_$Pointer$.base| .cse2)) (.cse4 (select (select |c_#memory_$Pointer$.offset| c_alloc_data_~pdata.base) c_alloc_data_~pdata.offset))) (let ((.cse5 (store .cse3 (bvadd .cse4 (_ bv1 32)) v_DerPreprocessor_1))) (let ((.cse0 (select .cse5 .cse4)) (.cse1 (store |c_#memory_$Pointer$.base| .cse2 .cse5))) (or (not (= v_DerPreprocessor_1 .cse0)) (= (bvadd (select |c_#valid| (select (select .cse1 c_alloc_data_~pdata.base) (bvadd c_alloc_data_~pdata.offset (_ bv8 32)))) (_ bv1 1)) (_ bv0 1)) (not (= (store |c_#memory_$Pointer$.base| .cse2 (store .cse3 (bvadd .cse4 (_ bv3 32)) .cse0)) .cse1)))))))) is different from false [2019-11-21 12:11:34,302 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-21 12:11:34,303 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: incompatible size at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.computeCostEstimation(ArrayIndexBasedCostEstimation.java:152) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.(ArrayIndexBasedCostEstimation.java:64) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.computeCostEstimation(ElimStorePlain.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:390) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:419) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:334) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-11-21 12:11:34,309 INFO L168 Benchmark]: Toolchain (without parser) took 25868.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 301.5 MB). Free memory was 951.0 MB in the beginning and 1.2 GB in the end (delta: -277.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 11.5 GB. [2019-11-21 12:11:34,310 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 12:11:34,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. [2019-11-21 12:11:34,311 INFO L168 Benchmark]: Boogie Preprocessor took 79.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-21 12:11:34,312 INFO L168 Benchmark]: RCFGBuilder took 867.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 11.5 GB. [2019-11-21 12:11:34,312 INFO L168 Benchmark]: TraceAbstraction took 24256.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 154.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -172.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-21 12:11:34,315 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 1.0 GB. Free memory is still 981.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 656.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 79.58 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 867.96 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: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 24256.80 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 154.7 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -172.4 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: incompatible size de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: incompatible size: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.arrays.ArrayIndexBasedCostEstimation.analyzeCosts(ArrayIndexBasedCostEstimation.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...