/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:49:40,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:49:40,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:49:40,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:49:40,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:49:40,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:49:40,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:49:40,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:49:40,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:49:40,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:49:40,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:49:40,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:49:40,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:49:40,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:49:40,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:49:41,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:49:41,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:49:41,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:49:41,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:49:41,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:49:41,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:49:41,038 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:49:41,039 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:49:41,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:49:41,046 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 03:49:41,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 03:49:41,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 03:49:41,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 03:49:41,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 03:49:41,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 03:49:41,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:49:41,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:49:41,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:49:41,056 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:49:41,057 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:49:41,058 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:49:41,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:49:41,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:49:41,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:49:41,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:49:41,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:49:41,062 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:49:41,116 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:49:41,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:49:41,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:49:41,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:49:41,123 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:49:41,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:49:41,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:49:41,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:49:41,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:49:41,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:49:41,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:49:41,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:49:41,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:49:41,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:49:41,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:49:41,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:49:41,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:49:41,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:49:41,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:49:41,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:49:41,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:49:41,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:49:41,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:49:41,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:49:41,128 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:49:41,128 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:49:41,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:49:41,570 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:49:41,574 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:49:41,575 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:49:41,576 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:49:41,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2020-12-22 03:49:41,668 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dd5d5fc/eed8423975c44982902895985392c464/FLAG4e94be5b0 [2020-12-22 03:49:42,538 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:49:42,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2020-12-22 03:49:42,553 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dd5d5fc/eed8423975c44982902895985392c464/FLAG4e94be5b0 [2020-12-22 03:49:42,834 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0dd5d5fc/eed8423975c44982902895985392c464 [2020-12-22 03:49:42,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:49:42,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:49:42,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:49:42,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:49:42,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:49:42,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:49:42" (1/1) ... [2020-12-22 03:49:42,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44592033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:42, skipping insertion in model container [2020-12-22 03:49:42,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:49:42" (1/1) ... [2020-12-22 03:49:42,864 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:49:42,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:49:43,265 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2020-12-22 03:49:43,270 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:49:43,281 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:49:43,329 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i[23721,23734] [2020-12-22 03:49:43,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:49:43,399 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:49:43,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43 WrapperNode [2020-12-22 03:49:43,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:49:43,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:49:43,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:49:43,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:49:43,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:49:43,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:49:43,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:49:43,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:49:43,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (1/1) ... [2020-12-22 03:49:43,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:49:43,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:49:43,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:49:43,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:49:43,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (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 [2020-12-22 03:49:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:49:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:49:43,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 03:49:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 03:49:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:49:43,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 03:49:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:49:43,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:49:43,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:49:44,180 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:49:44,180 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-22 03:49:44,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:49:44 BoogieIcfgContainer [2020-12-22 03:49:44,186 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:49:44,189 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:49:44,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:49:44,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:49:44,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:49:42" (1/3) ... [2020-12-22 03:49:44,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d71fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:49:44, skipping insertion in model container [2020-12-22 03:49:44,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:49:43" (2/3) ... [2020-12-22 03:49:44,198 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d71fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:49:44, skipping insertion in model container [2020-12-22 03:49:44,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:49:44" (3/3) ... [2020-12-22 03:49:44,202 INFO L111 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-12-22 03:49:44,211 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:49:44,218 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:49:44,241 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:49:44,289 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:49:44,290 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:49:44,290 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:49:44,290 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:49:44,290 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:49:44,290 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:49:44,291 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:49:44,291 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:49:44,314 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-22 03:49:44,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:49:44,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:49:44,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:49:44,325 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:49:44,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:49:44,333 INFO L82 PathProgramCache]: Analyzing trace with hash -427823588, now seen corresponding path program 1 times [2020-12-22 03:49:44,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:49:44,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603531987] [2020-12-22 03:49:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:49:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:49:44,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:49:44,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603531987] [2020-12-22 03:49:44,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:49:44,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:49:44,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957696354] [2020-12-22 03:49:44,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:49:44,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:49:44,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:49:44,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:49:44,616 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-22 03:49:44,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:49:44,640 INFO L93 Difference]: Finished difference Result 46 states and 69 transitions. [2020-12-22 03:49:44,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:49:44,642 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-22 03:49:44,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:49:44,651 INFO L225 Difference]: With dead ends: 46 [2020-12-22 03:49:44,651 INFO L226 Difference]: Without dead ends: 23 [2020-12-22 03:49:44,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:49:44,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-22 03:49:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-12-22 03:49:44,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 03:49:44,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2020-12-22 03:49:44,692 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 12 [2020-12-22 03:49:44,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:49:44,693 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2020-12-22 03:49:44,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:49:44,693 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2020-12-22 03:49:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-22 03:49:44,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:49:44,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:49:44,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:49:44,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:49:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:49:44,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1140031955, now seen corresponding path program 1 times [2020-12-22 03:49:44,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:49:44,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076704586] [2020-12-22 03:49:44,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:49:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:49:44,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:49:44,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076704586] [2020-12-22 03:49:44,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:49:44,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:49:44,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719546854] [2020-12-22 03:49:44,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:49:44,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:49:44,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:49:44,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:49:44,821 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand 4 states. [2020-12-22 03:49:44,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:49:44,930 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2020-12-22 03:49:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:49:44,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-22 03:49:44,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:49:44,933 INFO L225 Difference]: With dead ends: 40 [2020-12-22 03:49:44,933 INFO L226 Difference]: Without dead ends: 33 [2020-12-22 03:49:44,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:49:44,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-22 03:49:44,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2020-12-22 03:49:44,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-22 03:49:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2020-12-22 03:49:44,951 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2020-12-22 03:49:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:49:44,952 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2020-12-22 03:49:44,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:49:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2020-12-22 03:49:44,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:49:44,954 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:49:44,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:49:44,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:49:44,955 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:49:44,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:49:44,955 INFO L82 PathProgramCache]: Analyzing trace with hash 352372424, now seen corresponding path program 1 times [2020-12-22 03:49:44,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:49:44,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418619888] [2020-12-22 03:49:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:49:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:49:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:49:45,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418619888] [2020-12-22 03:49:45,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:49:45,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 03:49:45,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461322899] [2020-12-22 03:49:45,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 03:49:45,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:49:45,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 03:49:45,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 03:49:45,104 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand 4 states. [2020-12-22 03:49:45,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:49:45,172 INFO L93 Difference]: Finished difference Result 47 states and 60 transitions. [2020-12-22 03:49:45,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 03:49:45,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-22 03:49:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:49:45,176 INFO L225 Difference]: With dead ends: 47 [2020-12-22 03:49:45,177 INFO L226 Difference]: Without dead ends: 39 [2020-12-22 03:49:45,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:49:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-22 03:49:45,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-12-22 03:49:45,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-22 03:49:45,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2020-12-22 03:49:45,188 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 16 [2020-12-22 03:49:45,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:49:45,188 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-12-22 03:49:45,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 03:49:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2020-12-22 03:49:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-22 03:49:45,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:49:45,190 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:49:45,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 03:49:45,191 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:49:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:49:45,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1051666739, now seen corresponding path program 1 times [2020-12-22 03:49:45,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:49:45,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831642891] [2020-12-22 03:49:45,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:49:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:49:45,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:49:45,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831642891] [2020-12-22 03:49:45,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:49:45,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 03:49:45,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295941982] [2020-12-22 03:49:45,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 03:49:45,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:49:45,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 03:49:45,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 03:49:45,281 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 6 states. [2020-12-22 03:49:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:49:45,462 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-12-22 03:49:45,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 03:49:45,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-22 03:49:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:49:45,464 INFO L225 Difference]: With dead ends: 70 [2020-12-22 03:49:45,465 INFO L226 Difference]: Without dead ends: 43 [2020-12-22 03:49:45,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:49:45,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-22 03:49:45,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2020-12-22 03:49:45,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-22 03:49:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-12-22 03:49:45,473 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 17 [2020-12-22 03:49:45,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:49:45,473 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-12-22 03:49:45,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 03:49:45,474 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-12-22 03:49:45,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 03:49:45,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:49:45,475 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:49:45,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 03:49:45,475 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:49:45,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:49:45,476 INFO L82 PathProgramCache]: Analyzing trace with hash -86042878, now seen corresponding path program 1 times [2020-12-22 03:49:45,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:49:45,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559311163] [2020-12-22 03:49:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:49:45,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:49:45,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:49:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:49:45,600 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:49:45,662 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:49:45,662 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:49:45,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 03:49:45,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:49:45 BoogieIcfgContainer [2020-12-22 03:49:45,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:49:45,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:49:45,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:49:45,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:49:45,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:49:44" (3/4) ... [2020-12-22 03:49:45,748 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 03:49:45,850 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/list-properties/splice-1.i-witness.graphml [2020-12-22 03:49:45,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:49:45,859 INFO L168 Benchmark]: Toolchain (without parser) took 3011.60 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 114.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:49:45,860 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 123.5 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:49:45,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 555.86 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:49:45,861 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.68 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 133.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:49:45,862 INFO L168 Benchmark]: Boogie Preprocessor took 40.40 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 131.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:49:45,862 INFO L168 Benchmark]: RCFGBuilder took 674.20 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 110.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:49:45,863 INFO L168 Benchmark]: TraceAbstraction took 1554.42 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 117.6 MB in the end (delta: -7.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:49:45,867 INFO L168 Benchmark]: Witness Printer took 107.97 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 114.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:49:45,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 123.6 MB in the beginning and 123.5 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 555.86 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 102.4 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 67.68 ms. Allocated memory is still 151.0 MB. Free memory was 102.4 MB in the beginning and 133.8 MB in the end (delta: -31.4 MB). Peak memory consumption was 5.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.40 ms. Allocated memory is still 151.0 MB. Free memory was 133.8 MB in the beginning and 131.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 674.20 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 110.4 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1554.42 ms. Allocated memory is still 151.0 MB. Free memory was 109.9 MB in the beginning and 117.6 MB in the end (delta: -7.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 107.97 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 114.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 584]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int flag = 1; [L533] List a = (List) malloc(sizeof(struct node)); [L534] COND FALSE !(a == 0) [L535] List t; [L536] List l1; [L537] List l2; [L538] List b; [L539] List u; [L540] List p = a; [L541] COND TRUE __VERIFIER_nondet_int() [L542] COND TRUE \read(flag) [L543] p->h = 1 [L544] flag = 0 [L549] t = (List) malloc(sizeof(struct node)) [L550] COND FALSE !(t == 0) [L551] p->n = t [L552] EXPR p->n [L552] p = p->n [L541] COND FALSE !(__VERIFIER_nondet_int()) [L554] p->h = 3 [L555] EXPR a->h [L555] COND FALSE !(a->h == 3) [L556] flag = 1 [L557] l1 = 0 [L558] l2 = 0 [L559] p = a [L560] EXPR p->h [L560] COND TRUE p->h != 3 [L561] t = p [L562] EXPR p->n [L562] p = p->n [L563] COND TRUE \read(flag) [L564] t->n = l1 [L565] l1 = t [L566] flag = 0 [L560] EXPR p->h [L560] COND FALSE !(p->h != 3) [L573] p = l1 [L574] COND TRUE p != 0 [L575] EXPR p->h [L575] COND TRUE p->h != 2 [L584] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 26 SDslu, 128 SDs, 0 SdLazy, 109 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, 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, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 2135 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 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 incorrect! Received shutdown request...