./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 30f4e4ab 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/memsafety-ext3/getNumbers1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.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 32bit --witnessprinter.graph.data.programhash 1b1751fe95f9cf655681429038c1cde9e9c074e8 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:46:33,093 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:46:33,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:46:33,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:46:33,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:46:33,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:46:33,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:46:33,132 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:46:33,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:46:33,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:46:33,139 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:46:33,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:46:33,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:46:33,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:46:33,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:46:33,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:46:33,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:46:33,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:46:33,157 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:46:33,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:46:33,168 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:46:33,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:46:33,174 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:46:33,176 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:46:33,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:46:33,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:46:33,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:46:33,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:46:33,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:46:33,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:46:33,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:46:33,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:46:33,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:46:33,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:46:33,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:46:33,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:46:33,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:46:33,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:46:33,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:46:33,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:46:33,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:46:33,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 02:46:33,207 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:46:33,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:46:33,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:46:33,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:46:33,209 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:46:33,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:46:33,210 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 02:46:33,210 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:46:33,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:46:33,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 02:46:33,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:46:33,211 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 02:46:33,211 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 02:46:33,213 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 02:46:33,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 02:46:33,213 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 02:46:33,213 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 02:46:33,213 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:46:33,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:46:33,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:46:33,214 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 02:46:33,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 02:46:33,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 02:46:33,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:46:33,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 02:46:33,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:46:33,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 02:46:33,216 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b1751fe95f9cf655681429038c1cde9e9c074e8 [2019-11-28 02:46:33,558 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:46:33,582 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:46:33,587 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:46:33,589 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:46:33,589 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:46:33,590 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2019-11-28 02:46:33,658 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eef3a127/de5c1d6681da439c90c4cac150357c0e/FLAG193ef9d23 [2019-11-28 02:46:34,096 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:46:34,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2019-11-28 02:46:34,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eef3a127/de5c1d6681da439c90c4cac150357c0e/FLAG193ef9d23 [2019-11-28 02:46:34,498 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3eef3a127/de5c1d6681da439c90c4cac150357c0e [2019-11-28 02:46:34,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:46:34,505 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 02:46:34,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:46:34,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:46:34,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:46:34,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600cef8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34, skipping insertion in model container [2019-11-28 02:46:34,515 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,524 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:46:34,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:46:34,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:46:34,750 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:46:34,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:46:34,779 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:46:34,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34 WrapperNode [2019-11-28 02:46:34,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:46:34,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:46:34,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:46:34,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:46:34,853 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (1/1) ... [2019-11-28 02:46:34,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:46:34,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:46:34,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:46:34,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:46:34,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (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 [2019-11-28 02:46:34,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 02:46:34,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:46:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure getNumbers [2019-11-28 02:46:34,944 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 02:46:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-28 02:46:34,944 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 02:46:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure getNumbers [2019-11-28 02:46:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-28 02:46:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-28 02:46:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 02:46:34,945 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 02:46:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-28 02:46:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 02:46:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-28 02:46:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:46:35,162 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:46:35,162 INFO L297 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-28 02:46:35,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:35 BoogieIcfgContainer [2019-11-28 02:46:35,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:46:35,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 02:46:35,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 02:46:35,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 02:46:35,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:46:34" (1/3) ... [2019-11-28 02:46:35,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485b8167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:46:35, skipping insertion in model container [2019-11-28 02:46:35,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:46:34" (2/3) ... [2019-11-28 02:46:35,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485b8167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:46:35, skipping insertion in model container [2019-11-28 02:46:35,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:35" (3/3) ... [2019-11-28 02:46:35,172 INFO L109 eAbstractionObserver]: Analyzing ICFG getNumbers1-1.c [2019-11-28 02:46:35,182 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 02:46:35,189 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-11-28 02:46:35,205 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-11-28 02:46:35,251 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 02:46:35,251 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 02:46:35,251 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 02:46:35,251 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:46:35,252 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:46:35,252 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 02:46:35,252 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:46:35,252 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 02:46:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2019-11-28 02:46:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:46:35,288 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:35,290 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:35,294 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:35,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:35,309 INFO L82 PathProgramCache]: Analyzing trace with hash 543879226, now seen corresponding path program 1 times [2019-11-28 02:46:35,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:35,319 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286703977] [2019-11-28 02:46:35,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:35,607 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286703977] [2019-11-28 02:46:35,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:46:35,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:46:35,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972599304] [2019-11-28 02:46:35,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:46:35,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:35,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:46:35,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:46:35,642 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2019-11-28 02:46:35,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:35,779 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 02:46:35,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:46:35,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 02:46:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:35,794 INFO L225 Difference]: With dead ends: 27 [2019-11-28 02:46:35,794 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 02:46:35,799 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:46:35,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 02:46:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 02:46:35,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 02:46:35,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2019-11-28 02:46:35,842 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 9 [2019-11-28 02:46:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:35,843 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2019-11-28 02:46:35,843 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:46:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2019-11-28 02:46:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 02:46:35,844 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:35,844 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:35,844 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:35,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:35,845 INFO L82 PathProgramCache]: Analyzing trace with hash 543879227, now seen corresponding path program 1 times [2019-11-28 02:46:35,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:35,846 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137416303] [2019-11-28 02:46:35,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:36,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:36,002 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137416303] [2019-11-28 02:46:36,004 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:46:36,004 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 02:46:36,005 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783955005] [2019-11-28 02:46:36,009 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 02:46:36,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:36,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 02:46:36,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:46:36,011 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 4 states. [2019-11-28 02:46:36,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:36,108 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-11-28 02:46:36,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 02:46:36,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 02:46:36,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:36,110 INFO L225 Difference]: With dead ends: 27 [2019-11-28 02:46:36,110 INFO L226 Difference]: Without dead ends: 27 [2019-11-28 02:46:36,111 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 02:46:36,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-28 02:46:36,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2019-11-28 02:46:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 02:46:36,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-11-28 02:46:36,121 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 9 [2019-11-28 02:46:36,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:36,121 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-11-28 02:46:36,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 02:46:36,122 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-11-28 02:46:36,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 02:46:36,122 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:36,123 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:36,123 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:36,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash 2089391026, now seen corresponding path program 1 times [2019-11-28 02:46:36,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:36,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299699942] [2019-11-28 02:46:36,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:36,298 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:36,298 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299699942] [2019-11-28 02:46:36,299 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518773237] [2019-11-28 02:46:36,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:36,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-28 02:46:36,383 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:36,458 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 [2019-11-28 02:46:36,459 INFO L508 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-28 02:46:36,469 INFO L588 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-28 02:46:36,470 INFO L508 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-28 02:46:36,471 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2019-11-28 02:46:36,488 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:36,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:36,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2019-11-28 02:46:36,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428428168] [2019-11-28 02:46:36,490 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-28 02:46:36,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:36,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-28 02:46:36,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:46:36,491 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 5 states. [2019-11-28 02:46:36,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:36,584 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2019-11-28 02:46:36,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 02:46:36,585 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2019-11-28 02:46:36,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:36,586 INFO L225 Difference]: With dead ends: 30 [2019-11-28 02:46:36,587 INFO L226 Difference]: Without dead ends: 30 [2019-11-28 02:46:36,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-28 02:46:36,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-28 02:46:36,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-11-28 02:46:36,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-28 02:46:36,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2019-11-28 02:46:36,593 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 12 [2019-11-28 02:46:36,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:36,594 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2019-11-28 02:46:36,594 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-28 02:46:36,594 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2019-11-28 02:46:36,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-28 02:46:36,595 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:36,596 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:36,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:36,799 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:36,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:36,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1912985381, now seen corresponding path program 2 times [2019-11-28 02:46:36,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:36,801 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567193791] [2019-11-28 02:46:36,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:36,998 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567193791] [2019-11-28 02:46:37,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 02:46:37,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 02:46:37,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936580918] [2019-11-28 02:46:37,001 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:46:37,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:37,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:46:37,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:46:37,007 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 8 states. [2019-11-28 02:46:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:37,103 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2019-11-28 02:46:37,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:46:37,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2019-11-28 02:46:37,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:37,105 INFO L225 Difference]: With dead ends: 29 [2019-11-28 02:46:37,105 INFO L226 Difference]: Without dead ends: 29 [2019-11-28 02:46:37,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:46:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-11-28 02:46:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2019-11-28 02:46:37,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-11-28 02:46:37,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-11-28 02:46:37,112 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 15 [2019-11-28 02:46:37,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:37,112 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-11-28 02:46:37,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:46:37,113 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-11-28 02:46:37,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-28 02:46:37,114 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:37,114 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:37,114 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:37,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:37,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2027302431, now seen corresponding path program 1 times [2019-11-28 02:46:37,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:37,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553945781] [2019-11-28 02:46:37,116 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:37,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:37,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553945781] [2019-11-28 02:46:37,246 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727396383] [2019-11-28 02:46:37,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:37,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-28 02:46:37,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:37,318 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:37,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:37,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2019-11-28 02:46:37,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868570705] [2019-11-28 02:46:37,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 02:46:37,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:37,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 02:46:37,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-28 02:46:37,321 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 8 states. [2019-11-28 02:46:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:37,422 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2019-11-28 02:46:37,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 02:46:37,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-11-28 02:46:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:37,424 INFO L225 Difference]: With dead ends: 32 [2019-11-28 02:46:37,424 INFO L226 Difference]: Without dead ends: 32 [2019-11-28 02:46:37,425 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:46:37,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-28 02:46:37,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-11-28 02:46:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-28 02:46:37,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2019-11-28 02:46:37,431 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 20 [2019-11-28 02:46:37,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:37,431 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2019-11-28 02:46:37,431 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 02:46:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2019-11-28 02:46:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-11-28 02:46:37,433 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:37,433 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:37,638 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:37,638 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash -1378383288, now seen corresponding path program 2 times [2019-11-28 02:46:37,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:37,640 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986793756] [2019-11-28 02:46:37,640 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:37,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:37,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986793756] [2019-11-28 02:46:37,767 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60909233] [2019-11-28 02:46:37,768 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:37,822 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:46:37,823 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:46:37,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-28 02:46:37,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:37,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:37,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-11-28 02:46:37,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119260804] [2019-11-28 02:46:37,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-28 02:46:37,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-28 02:46:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-28 02:46:37,847 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 9 states. [2019-11-28 02:46:37,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:37,963 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2019-11-28 02:46:37,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-28 02:46:37,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2019-11-28 02:46:37,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:37,965 INFO L225 Difference]: With dead ends: 35 [2019-11-28 02:46:37,965 INFO L226 Difference]: Without dead ends: 35 [2019-11-28 02:46:37,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:46:37,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-28 02:46:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-11-28 02:46:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-11-28 02:46:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2019-11-28 02:46:37,971 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 23 [2019-11-28 02:46:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:37,971 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2019-11-28 02:46:37,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-28 02:46:37,972 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2019-11-28 02:46:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-11-28 02:46:37,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:37,973 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:38,181 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:38,182 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:38,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:38,184 INFO L82 PathProgramCache]: Analyzing trace with hash -149204609, now seen corresponding path program 3 times [2019-11-28 02:46:38,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:38,185 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073660745] [2019-11-28 02:46:38,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:38,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073660745] [2019-11-28 02:46:38,359 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136449834] [2019-11-28 02:46:38,359 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:38,427 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2019-11-28 02:46:38,427 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:46:38,429 INFO L255 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-28 02:46:38,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:38,454 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:38,454 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2019-11-28 02:46:38,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435454711] [2019-11-28 02:46:38,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-28 02:46:38,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:38,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-28 02:46:38,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2019-11-28 02:46:38,460 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 10 states. [2019-11-28 02:46:38,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:38,558 INFO L93 Difference]: Finished difference Result 38 states and 39 transitions. [2019-11-28 02:46:38,559 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-28 02:46:38,559 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2019-11-28 02:46:38,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:38,560 INFO L225 Difference]: With dead ends: 38 [2019-11-28 02:46:38,560 INFO L226 Difference]: Without dead ends: 38 [2019-11-28 02:46:38,560 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:46:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-28 02:46:38,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2019-11-28 02:46:38,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-28 02:46:38,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2019-11-28 02:46:38,564 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 26 [2019-11-28 02:46:38,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:38,565 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2019-11-28 02:46:38,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-28 02:46:38,565 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2019-11-28 02:46:38,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-11-28 02:46:38,566 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:38,566 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:38,766 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:38,767 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:38,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:38,767 INFO L82 PathProgramCache]: Analyzing trace with hash -578344216, now seen corresponding path program 4 times [2019-11-28 02:46:38,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:38,767 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982409313] [2019-11-28 02:46:38,768 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:38,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:38,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:38,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:38,938 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982409313] [2019-11-28 02:46:38,939 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841178966] [2019-11-28 02:46:38,939 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:39,004 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-28 02:46:39,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:46:39,005 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-28 02:46:39,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:39,038 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:39,038 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:39,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2019-11-28 02:46:39,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982647445] [2019-11-28 02:46:39,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-28 02:46:39,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:39,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-28 02:46:39,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2019-11-28 02:46:39,040 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 11 states. [2019-11-28 02:46:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:39,173 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions. [2019-11-28 02:46:39,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-28 02:46:39,175 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2019-11-28 02:46:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:39,176 INFO L225 Difference]: With dead ends: 41 [2019-11-28 02:46:39,177 INFO L226 Difference]: Without dead ends: 41 [2019-11-28 02:46:39,177 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:46:39,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-11-28 02:46:39,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2019-11-28 02:46:39,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-11-28 02:46:39,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2019-11-28 02:46:39,183 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 29 [2019-11-28 02:46:39,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:39,183 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2019-11-28 02:46:39,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-28 02:46:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2019-11-28 02:46:39,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-11-28 02:46:39,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:39,201 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:39,404 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:39,405 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:39,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1041263839, now seen corresponding path program 5 times [2019-11-28 02:46:39,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:39,407 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951061437] [2019-11-28 02:46:39,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:39,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951061437] [2019-11-28 02:46:39,550 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727331314] [2019-11-28 02:46:39,550 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:39,612 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2019-11-28 02:46:39,612 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:46:39,614 INFO L255 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-28 02:46:39,616 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:39,633 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:39,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 12 [2019-11-28 02:46:39,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818581508] [2019-11-28 02:46:39,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-28 02:46:39,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:39,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-28 02:46:39,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2019-11-28 02:46:39,635 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 12 states. [2019-11-28 02:46:39,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:39,748 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2019-11-28 02:46:39,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-28 02:46:39,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2019-11-28 02:46:39,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:39,750 INFO L225 Difference]: With dead ends: 44 [2019-11-28 02:46:39,750 INFO L226 Difference]: Without dead ends: 44 [2019-11-28 02:46:39,751 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:46:39,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-28 02:46:39,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2019-11-28 02:46:39,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-11-28 02:46:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2019-11-28 02:46:39,756 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 32 [2019-11-28 02:46:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:39,756 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2019-11-28 02:46:39,756 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-28 02:46:39,757 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2019-11-28 02:46:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-11-28 02:46:39,758 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:39,758 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:39,962 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:39,962 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:39,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:39,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1122227080, now seen corresponding path program 6 times [2019-11-28 02:46:39,963 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:39,963 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863686561] [2019-11-28 02:46:39,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:39,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:40,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863686561] [2019-11-28 02:46:40,105 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882787138] [2019-11-28 02:46:40,105 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:40,173 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2019-11-28 02:46:40,174 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:46:40,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2019-11-28 02:46:40,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:40,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:40,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 13 [2019-11-28 02:46:40,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679224619] [2019-11-28 02:46:40,196 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-11-28 02:46:40,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:40,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-11-28 02:46:40,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2019-11-28 02:46:40,197 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 13 states. [2019-11-28 02:46:40,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:40,306 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2019-11-28 02:46:40,306 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-11-28 02:46:40,306 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2019-11-28 02:46:40,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:40,307 INFO L225 Difference]: With dead ends: 47 [2019-11-28 02:46:40,308 INFO L226 Difference]: Without dead ends: 47 [2019-11-28 02:46:40,308 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:46:40,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-11-28 02:46:40,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-11-28 02:46:40,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-11-28 02:46:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2019-11-28 02:46:40,312 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 35 [2019-11-28 02:46:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:40,312 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2019-11-28 02:46:40,312 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-11-28 02:46:40,313 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2019-11-28 02:46:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-11-28 02:46:40,313 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:40,314 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:40,517 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:40,518 INFO L410 AbstractCegarLoop]: === Iteration 11 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:40,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:40,519 INFO L82 PathProgramCache]: Analyzing trace with hash -673480641, now seen corresponding path program 7 times [2019-11-28 02:46:40,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:40,519 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935876715] [2019-11-28 02:46:40,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:40,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:40,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935876715] [2019-11-28 02:46:40,709 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066658179] [2019-11-28 02:46:40,710 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:40,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-28 02:46:40,771 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:40,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:40,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 14 [2019-11-28 02:46:40,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237114499] [2019-11-28 02:46:40,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-28 02:46:40,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:40,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-28 02:46:40,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2019-11-28 02:46:40,796 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 14 states. [2019-11-28 02:46:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:40,926 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2019-11-28 02:46:40,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-28 02:46:40,927 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2019-11-28 02:46:40,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:40,928 INFO L225 Difference]: With dead ends: 50 [2019-11-28 02:46:40,928 INFO L226 Difference]: Without dead ends: 50 [2019-11-28 02:46:40,929 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:46:40,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2019-11-28 02:46:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2019-11-28 02:46:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-11-28 02:46:40,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2019-11-28 02:46:40,933 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 38 [2019-11-28 02:46:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:40,933 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2019-11-28 02:46:40,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-28 02:46:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2019-11-28 02:46:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-11-28 02:46:40,934 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:40,934 INFO L410 BasicCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:41,138 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:41,138 INFO L410 AbstractCegarLoop]: === Iteration 12 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:41,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:41,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1510442024, now seen corresponding path program 8 times [2019-11-28 02:46:41,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:41,139 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198585161] [2019-11-28 02:46:41,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 02:46:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:41,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198585161] [2019-11-28 02:46:41,294 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858973845] [2019-11-28 02:46:41,294 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:41,353 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-28 02:46:41,353 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-28 02:46:41,355 INFO L255 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-28 02:46:41,357 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-28 02:46:41,379 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 02:46:41,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-28 02:46:41,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2019-11-28 02:46:41,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651522561] [2019-11-28 02:46:41,381 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-28 02:46:41,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 02:46:41,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-28 02:46:41,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2019-11-28 02:46:41,382 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 15 states. [2019-11-28 02:46:41,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 02:46:41,511 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2019-11-28 02:46:41,511 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-28 02:46:41,511 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2019-11-28 02:46:41,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 02:46:41,512 INFO L225 Difference]: With dead ends: 51 [2019-11-28 02:46:41,512 INFO L226 Difference]: Without dead ends: 51 [2019-11-28 02:46:41,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2019-11-28 02:46:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-28 02:46:41,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-11-28 02:46:41,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-11-28 02:46:41,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2019-11-28 02:46:41,517 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 41 [2019-11-28 02:46:41,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 02:46:41,517 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2019-11-28 02:46:41,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-28 02:46:41,517 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2019-11-28 02:46:41,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-11-28 02:46:41,518 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 02:46:41,518 INFO L410 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 02:46:41,722 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-28 02:46:41,722 INFO L410 AbstractCegarLoop]: === Iteration 13 === [mainErr2ENSURES_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, getNumbersErr1REQUIRES_VIOLATION, getNumbersErr0REQUIRES_VIOLATION]=== [2019-11-28 02:46:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:46:41,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1709012065, now seen corresponding path program 9 times [2019-11-28 02:46:41,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:46:41,723 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755360351] [2019-11-28 02:46:41,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:46:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:46:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:46:41,808 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:46:41,808 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 02:46:41,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:46:41 BoogieIcfgContainer [2019-11-28 02:46:41,885 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 02:46:41,886 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:46:41,886 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:46:41,886 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:46:41,887 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:46:35" (3/4) ... [2019-11-28 02:46:41,890 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 02:46:41,961 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:46:41,961 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:46:41,963 INFO L168 Benchmark]: Toolchain (without parser) took 7458.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 190.8 MB). Free memory was 961.7 MB in the beginning and 917.0 MB in the end (delta: 44.7 MB). Peak memory consumption was 235.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:41,963 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:46:41,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.04 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:41,964 INFO L168 Benchmark]: Boogie Preprocessor took 99.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:41,965 INFO L168 Benchmark]: RCFGBuilder took 283.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:41,966 INFO L168 Benchmark]: TraceAbstraction took 6720.05 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 917.0 MB in the end (delta: 167.1 MB). Peak memory consumption was 237.9 MB. Max. memory is 11.5 GB. [2019-11-28 02:46:41,966 INFO L168 Benchmark]: Witness Printer took 75.10 ms. Allocated memory is still 1.2 GB. Free memory was 917.0 MB in the beginning and 917.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. [2019-11-28 02:46:41,969 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 274.04 ms. Allocated memory is still 1.0 GB. Free memory was 961.7 MB in the beginning and 951.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 99.69 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.1 MB). Free memory was 951.0 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 283.68 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 6720.05 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 70.8 MB). Free memory was 1.1 GB in the beginning and 917.0 MB in the end (delta: 167.1 MB). Peak memory consumption was 237.9 MB. Max. memory is 11.5 GB. * Witness Printer took 75.10 ms. Allocated memory is still 1.2 GB. Free memory was 917.0 MB in the beginning and 917.0 MB in the end (delta: 24 B). Peak memory consumption was 24 B. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L19] CALL, EXPR getNumbers() [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=10] [L10] COND FALSE !(i < 10) VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=10] [L14] return array; [L19] RET, EXPR getNumbers() VAL [getNumbers()={11:0}] [L19] int *numbers = getNumbers(); [L21] int i = 0; VAL [i=0, numbers={11:0}] [L21] COND TRUE i < 10 [L22] numbers + i - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 5 error locations. Result: UNSAFE, OverallTime: 6.5s, OverallIterations: 13, TraceHistogramMax: 10, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 232 SDtfs, 121 SDslu, 936 SDs, 0 SdLazy, 711 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 377 GetRequests, 277 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 18 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 589 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 524 ConstructedInterpolants, 0 QuantifiedInterpolants, 43496 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1180 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 21 InterpolantComputations, 3 PerfectInterpolantSequences, 7/819 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...