./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -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/termination-crafted/LexIndexValue-Array-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-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 64bit --witnessprinter.graph.data.programhash b9dfe2826dbd43b76a93fbf593c8a07947a4c894 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:17:33,789 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:17:33,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:17:33,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:17:33,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:17:33,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:17:33,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:17:33,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:17:33,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:17:33,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:17:33,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:17:33,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:17:33,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:17:33,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:17:33,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:17:33,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:17:33,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:17:33,838 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:17:33,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:17:33,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:17:33,846 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:17:33,848 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:17:33,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:17:33,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:17:33,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:17:33,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:17:33,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:17:33,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:17:33,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:17:33,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:17:33,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:17:33,864 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:17:33,865 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:17:33,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:17:33,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:17:33,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:17:33,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:17:33,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:17:33,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:17:33,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:17:33,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:17:33,873 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2020-10-20 06:17:33,924 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:17:33,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:17:33,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:17:33,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:17:33,929 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:17:33,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:17:33,930 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:17:33,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:17:33,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:17:33,930 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:17:33,931 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:17:33,932 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 06:17:33,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:17:33,933 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:17:33,933 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:17:33,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:17:33,933 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:17:33,934 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:17:33,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:17:33,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:17:33,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:17:33,935 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:17:33,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:17:33,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:17:33,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:17:33,936 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9dfe2826dbd43b76a93fbf593c8a07947a4c894 [2020-10-20 06:17:34,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:17:34,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:17:34,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:17:34,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:17:34,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:17:34,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2020-10-20 06:17:34,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92ac5983/a0de3a4c2d8b47368337cef7d44ebadc/FLAGdd62e3ea3 [2020-10-20 06:17:34,713 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:17:34,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/LexIndexValue-Array-1.c [2020-10-20 06:17:34,720 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92ac5983/a0de3a4c2d8b47368337cef7d44ebadc/FLAGdd62e3ea3 [2020-10-20 06:17:35,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e92ac5983/a0de3a4c2d8b47368337cef7d44ebadc [2020-10-20 06:17:35,136 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:17:35,143 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:17:35,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:35,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:17:35,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:17:35,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ede9696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35, skipping insertion in model container [2020-10-20 06:17:35,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:17:35,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:17:35,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:35,434 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:17:35,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:17:35,481 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:17:35,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35 WrapperNode [2020-10-20 06:17:35,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:17:35,482 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:17:35,482 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:17:35,482 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:17:35,492 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,500 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,511 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (1/1) ... [2020-10-20 06:17:35,520 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:17:35,521 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:17:35,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:17:35,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:17:35,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (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 [2020-10-20 06:17:35,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:17:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:17:35,590 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:17:35,590 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:17:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:17:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:17:35,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:17:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:17:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:17:35,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:17:35,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:17:35,876 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:17:35,876 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-20 06:17:35,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:35 BoogieIcfgContainer [2020-10-20 06:17:35,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:17:35,880 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:17:35,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:17:35,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:17:35,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:17:35" (1/3) ... [2020-10-20 06:17:35,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59110213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:35, skipping insertion in model container [2020-10-20 06:17:35,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:17:35" (2/3) ... [2020-10-20 06:17:35,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59110213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:17:35, skipping insertion in model container [2020-10-20 06:17:35,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:35" (3/3) ... [2020-10-20 06:17:35,888 INFO L111 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Array-1.c [2020-10-20 06:17:35,906 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:17:35,925 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-10-20 06:17:35,952 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-20 06:17:35,977 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:17:35,978 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:17:35,978 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:17:35,978 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:17:35,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:17:35,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:17:35,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:17:35,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:17:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-10-20 06:17:36,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:36,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:36,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:36,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:36,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:36,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673271, now seen corresponding path program 1 times [2020-10-20 06:17:36,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:36,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434321162] [2020-10-20 06:17:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:36,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434321162] [2020-10-20 06:17:36,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:36,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:17:36,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693019613] [2020-10-20 06:17:36,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:36,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:36,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:36,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:36,284 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2020-10-20 06:17:36,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:36,415 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-10-20 06:17:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:36,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:36,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:36,427 INFO L225 Difference]: With dead ends: 39 [2020-10-20 06:17:36,427 INFO L226 Difference]: Without dead ends: 36 [2020-10-20 06:17:36,429 INFO L677 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 [2020-10-20 06:17:36,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-20 06:17:36,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-10-20 06:17:36,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-20 06:17:36,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-20 06:17:36,479 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-10-20 06:17:36,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:36,479 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-20 06:17:36,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:36,480 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-20 06:17:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 06:17:36,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:36,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:36,481 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:17:36,481 INFO L429 AbstractCegarLoop]: === Iteration 2 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:36,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1038673272, now seen corresponding path program 1 times [2020-10-20 06:17:36,482 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:36,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290291969] [2020-10-20 06:17:36,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:36,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290291969] [2020-10-20 06:17:36,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:36,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:17:36,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001012739] [2020-10-20 06:17:36,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:36,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:36,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:36,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:36,570 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-10-20 06:17:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:36,641 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-10-20 06:17:36,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:36,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 06:17:36,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:36,643 INFO L225 Difference]: With dead ends: 29 [2020-10-20 06:17:36,643 INFO L226 Difference]: Without dead ends: 29 [2020-10-20 06:17:36,644 INFO L677 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 [2020-10-20 06:17:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-20 06:17:36,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-20 06:17:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-20 06:17:36,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-10-20 06:17:36,650 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 8 [2020-10-20 06:17:36,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:36,650 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-10-20 06:17:36,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-10-20 06:17:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 06:17:36,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:36,651 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:36,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:17:36,652 INFO L429 AbstractCegarLoop]: === Iteration 3 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:36,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:36,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1416659532, now seen corresponding path program 1 times [2020-10-20 06:17:36,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:36,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660272792] [2020-10-20 06:17:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660272792] [2020-10-20 06:17:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981740072] [2020-10-20 06:17:36,800 INFO L95 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 [2020-10-20 06:17:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:36,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:17:36,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:36,929 INFO L384 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 [2020-10-20 06:17:36,931 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:17:36,940 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:17:36,941 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:17:36,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 06:17:36,969 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:36,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:36,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-10-20 06:17:36,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060528788] [2020-10-20 06:17:36,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 06:17:36,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:36,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 06:17:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:17:36,972 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-10-20 06:17:37,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:37,073 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-10-20 06:17:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:17:37,074 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-20 06:17:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:37,075 INFO L225 Difference]: With dead ends: 35 [2020-10-20 06:17:37,075 INFO L226 Difference]: Without dead ends: 35 [2020-10-20 06:17:37,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-20 06:17:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-20 06:17:37,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-20 06:17:37,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-20 06:17:37,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-10-20 06:17:37,082 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 12 [2020-10-20 06:17:37,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:37,082 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-10-20 06:17:37,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 06:17:37,083 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-10-20 06:17:37,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-20 06:17:37,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:37,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:37,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-20 06:17:37,297 INFO L429 AbstractCegarLoop]: === Iteration 4 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:37,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:37,298 INFO L82 PathProgramCache]: Analyzing trace with hash 945846593, now seen corresponding path program 1 times [2020-10-20 06:17:37,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:37,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706381467] [2020-10-20 06:17:37,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:37,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,450 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 06:17:37,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706381467] [2020-10-20 06:17:37,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:37,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:17:37,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755479505] [2020-10-20 06:17:37,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 06:17:37,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:37,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 06:17:37,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 06:17:37,452 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2020-10-20 06:17:37,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:37,527 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-10-20 06:17:37,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 06:17:37,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-20 06:17:37,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:37,529 INFO L225 Difference]: With dead ends: 46 [2020-10-20 06:17:37,530 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 06:17:37,530 INFO L677 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 [2020-10-20 06:17:37,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 06:17:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-20 06:17:37,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:17:37,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2020-10-20 06:17:37,537 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 22 [2020-10-20 06:17:37,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:37,537 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2020-10-20 06:17:37,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 06:17:37,538 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2020-10-20 06:17:37,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-20 06:17:37,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:37,539 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:37,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:17:37,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:37,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:37,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1574303516, now seen corresponding path program 1 times [2020-10-20 06:17:37,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:37,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776144934] [2020-10-20 06:17:37,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:37,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:37,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-20 06:17:37,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776144934] [2020-10-20 06:17:37,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:17:37,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 06:17:37,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886622550] [2020-10-20 06:17:37,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:17:37,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:37,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:17:37,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:17:37,625 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 5 states. [2020-10-20 06:17:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:37,713 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-10-20 06:17:37,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 06:17:37,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-20 06:17:37,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:37,717 INFO L225 Difference]: With dead ends: 48 [2020-10-20 06:17:37,717 INFO L226 Difference]: Without dead ends: 48 [2020-10-20 06:17:37,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:17:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-20 06:17:37,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-20 06:17:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-20 06:17:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-20 06:17:37,723 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 24 [2020-10-20 06:17:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:37,723 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-20 06:17:37,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:17:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-20 06:17:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-20 06:17:37,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:37,725 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:37,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 06:17:37,725 INFO L429 AbstractCegarLoop]: === Iteration 6 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:37,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:37,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1258071097, now seen corresponding path program 1 times [2020-10-20 06:17:37,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:37,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760625558] [2020-10-20 06:17:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:37,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760625558] [2020-10-20 06:17:37,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929918490] [2020-10-20 06:17:37,809 INFO L95 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 [2020-10-20 06:17:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:37,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-20 06:17:37,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:37,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:37,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-10-20 06:17:37,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288650094] [2020-10-20 06:17:37,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-20 06:17:37,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:37,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-20 06:17:37,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:17:37,892 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2020-10-20 06:17:37,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:37,975 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2020-10-20 06:17:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:17:37,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-10-20 06:17:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:37,977 INFO L225 Difference]: With dead ends: 52 [2020-10-20 06:17:37,977 INFO L226 Difference]: Without dead ends: 52 [2020-10-20 06:17:37,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-20 06:17:37,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-20 06:17:37,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-10-20 06:17:37,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-20 06:17:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-20 06:17:37,983 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 26 [2020-10-20 06:17:37,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:37,983 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-20 06:17:37,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-20 06:17:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-20 06:17:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-20 06:17:37,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:37,985 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:38,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:38,198 INFO L429 AbstractCegarLoop]: === Iteration 7 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:38,199 INFO L82 PathProgramCache]: Analyzing trace with hash -113674038, now seen corresponding path program 2 times [2020-10-20 06:17:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:38,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513091247] [2020-10-20 06:17:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:38,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:38,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:38,306 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:17:38,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513091247] [2020-10-20 06:17:38,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784039760] [2020-10-20 06:17:38,307 INFO L93 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 [2020-10-20 06:17:38,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-20 06:17:38,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:38,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:17:38,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:38,413 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-20 06:17:38,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:17:38,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 11 [2020-10-20 06:17:38,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400285855] [2020-10-20 06:17:38,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:17:38,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:38,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:17:38,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:17:38,416 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 5 states. [2020-10-20 06:17:38,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:38,447 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-20 06:17:38,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:17:38,448 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-10-20 06:17:38,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:38,449 INFO L225 Difference]: With dead ends: 48 [2020-10-20 06:17:38,449 INFO L226 Difference]: Without dead ends: 46 [2020-10-20 06:17:38,450 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-20 06:17:38,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-20 06:17:38,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-20 06:17:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-20 06:17:38,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-10-20 06:17:38,455 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2020-10-20 06:17:38,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:38,455 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-10-20 06:17:38,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:17:38,456 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-10-20 06:17:38,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-20 06:17:38,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:38,457 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:38,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:38,668 INFO L429 AbstractCegarLoop]: === Iteration 8 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:38,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1865200645, now seen corresponding path program 1 times [2020-10-20 06:17:38,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:38,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923105222] [2020-10-20 06:17:38,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:38,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:38,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:17:38,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923105222] [2020-10-20 06:17:38,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501766428] [2020-10-20 06:17:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-20 06:17:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:38,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-20 06:17:38,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:38,823 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:17:38,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:38,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2020-10-20 06:17:38,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74826251] [2020-10-20 06:17:38,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-20 06:17:38,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:38,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-20 06:17:38,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:17:38,825 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand 9 states. [2020-10-20 06:17:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:38,900 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-20 06:17:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-20 06:17:38,900 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-10-20 06:17:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:38,901 INFO L225 Difference]: With dead ends: 53 [2020-10-20 06:17:38,901 INFO L226 Difference]: Without dead ends: 53 [2020-10-20 06:17:38,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-20 06:17:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-20 06:17:38,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2020-10-20 06:17:38,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-20 06:17:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-10-20 06:17:38,907 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 32 [2020-10-20 06:17:38,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:38,907 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-10-20 06:17:38,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-20 06:17:38,908 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-10-20 06:17:38,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-20 06:17:38,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:38,909 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:39,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:39,119 INFO L429 AbstractCegarLoop]: === Iteration 9 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:39,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:39,120 INFO L82 PathProgramCache]: Analyzing trace with hash 133323454, now seen corresponding path program 2 times [2020-10-20 06:17:39,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:39,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16243318] [2020-10-20 06:17:39,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:17:39,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16243318] [2020-10-20 06:17:39,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914781716] [2020-10-20 06:17:39,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-10-20 06:17:39,298 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-20 06:17:39,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:39,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-20 06:17:39,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:39,383 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:17:39,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-20 06:17:39,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10 [2020-10-20 06:17:39,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24240633] [2020-10-20 06:17:39,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-20 06:17:39,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:39,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-20 06:17:39,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:17:39,388 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 10 states. [2020-10-20 06:17:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:39,487 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2020-10-20 06:17:39,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-20 06:17:39,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-20 06:17:39,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:39,489 INFO L225 Difference]: With dead ends: 57 [2020-10-20 06:17:39,489 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 06:17:39,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-20 06:17:39,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 06:17:39,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2020-10-20 06:17:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-20 06:17:39,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-10-20 06:17:39,503 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 36 [2020-10-20 06:17:39,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:39,504 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-10-20 06:17:39,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-20 06:17:39,506 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-10-20 06:17:39,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-20 06:17:39,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:17:39,509 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:17:39,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:39,723 INFO L429 AbstractCegarLoop]: === Iteration 10 === [mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr8ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-10-20 06:17:39,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:17:39,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1483321343, now seen corresponding path program 3 times [2020-10-20 06:17:39,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:17:39,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839039891] [2020-10-20 06:17:39,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:17:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:17:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:17:39,821 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-20 06:17:39,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839039891] [2020-10-20 06:17:39,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889223085] [2020-10-20 06:17:39,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-10-20 06:17:39,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-20 06:17:39,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-20 06:17:39,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-20 06:17:39,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 06:17:39,873 INFO L384 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 [2020-10-20 06:17:39,873 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-20 06:17:39,879 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-20 06:17:39,880 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-20 06:17:39,880 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2020-10-20 06:17:39,980 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-20 06:17:39,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-20 06:17:39,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2020-10-20 06:17:39,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77625508] [2020-10-20 06:17:39,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 06:17:39,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:17:39,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 06:17:39,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-10-20 06:17:39,982 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-10-20 06:17:40,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:17:40,073 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-10-20 06:17:40,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-20 06:17:40,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2020-10-20 06:17:40,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:17:40,074 INFO L225 Difference]: With dead ends: 54 [2020-10-20 06:17:40,074 INFO L226 Difference]: Without dead ends: 0 [2020-10-20 06:17:40,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-20 06:17:40,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-20 06:17:40,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-20 06:17:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-20 06:17:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 06:17:40,076 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-10-20 06:17:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:17:40,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 06:17:40,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 06:17:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-20 06:17:40,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-20 06:17:40,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-20 06:17:40,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:17:40 BoogieIcfgContainer [2020-10-20 06:17:40,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:17:40,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:17:40,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:17:40,283 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:17:40,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:17:35" (3/4) ... [2020-10-20 06:17:40,286 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-20 06:17:40,292 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-10-20 06:17:40,292 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-10-20 06:17:40,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-10-20 06:17:40,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-10-20 06:17:40,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:40,297 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-20 06:17:40,342 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:17:40,343 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:17:40,344 INFO L168 Benchmark]: Toolchain (without parser) took 5206.70 ms. Allocated memory was 40.9 MB in the beginning and 55.6 MB in the end (delta: 14.7 MB). Free memory was 18.9 MB in the beginning and 13.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,345 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 32.5 MB. Free memory was 17.0 MB in the beginning and 16.9 MB in the end (delta: 40.1 kB). Peak memory consumption was 40.1 kB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.52 ms. Allocated memory was 40.9 MB in the beginning and 43.5 MB in the end (delta: 2.6 MB). Free memory was 18.1 MB in the beginning and 18.2 MB in the end (delta: -99.9 kB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,346 INFO L168 Benchmark]: Boogie Preprocessor took 38.40 ms. Allocated memory is still 43.5 MB. Free memory was 18.2 MB in the beginning and 16.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,347 INFO L168 Benchmark]: RCFGBuilder took 358.01 ms. Allocated memory is still 43.5 MB. Free memory was 16.3 MB in the beginning and 13.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,348 INFO L168 Benchmark]: TraceAbstraction took 4402.73 ms. Allocated memory was 43.5 MB in the beginning and 55.6 MB in the end (delta: 12.1 MB). Free memory was 13.3 MB in the beginning and 16.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,348 INFO L168 Benchmark]: Witness Printer took 60.03 ms. Allocated memory is still 55.6 MB. Free memory was 16.8 MB in the beginning and 13.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:17:40,351 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 32.5 MB. Free memory was 17.0 MB in the beginning and 16.9 MB in the end (delta: 40.1 kB). Peak memory consumption was 40.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 337.52 ms. Allocated memory was 40.9 MB in the beginning and 43.5 MB in the end (delta: 2.6 MB). Free memory was 18.1 MB in the beginning and 18.2 MB in the end (delta: -99.9 kB). Peak memory consumption was 6.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 38.40 ms. Allocated memory is still 43.5 MB. Free memory was 18.2 MB in the beginning and 16.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * RCFGBuilder took 358.01 ms. Allocated memory is still 43.5 MB. Free memory was 16.3 MB in the beginning and 13.8 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 4402.73 ms. Allocated memory was 43.5 MB in the beginning and 55.6 MB in the end (delta: 12.1 MB). Free memory was 13.3 MB in the beginning and 16.8 MB in the end (delta: -3.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 14.3 GB. * Witness Printer took 60.03 ms. Allocated memory is still 55.6 MB. Free memory was 16.8 MB in the beginning and 13.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 18]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 15]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 10]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 213 SDtfs, 156 SDslu, 484 SDs, 0 SdLazy, 505 SolverSat, 32 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 243 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, 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, 10 MinimizatonAttempts, 16 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 414 NumberOfCodeBlocks, 378 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 398 ConstructedInterpolants, 1 QuantifiedInterpolants, 51941 SizeOfPredicates, 4 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 142/416 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...