/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/ldv-sets/test_add-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:02:41,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:02:41,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:02:41,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:02:41,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:02:41,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:02:41,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:02:41,254 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:02:41,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:02:41,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:02:41,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:02:41,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:02:41,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:02:41,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:02:41,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:02:41,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:02:41,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:02:41,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:02:41,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:02:41,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:02:41,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:02:41,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:02:41,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:02:41,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:02:41,305 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:02:41,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:02:41,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:02:41,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:02:41,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:02:41,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:02:41,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:02:41,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:02:41,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:02:41,318 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:02:41,319 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:02:41,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:02:41,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:02:41,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:02:41,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:02:41,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:02:41,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:02:41,356 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:02:41,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:02:41,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:02:41,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:02:41,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:02:41,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:02:41,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:02:41,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:02:41,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:02:41,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:02:41,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:02:41,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:02:41,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:02:41,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:02:41,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:02:41,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:02:41,360 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:02:41,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:02:41,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:02:41,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:02:41,361 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:02:41,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:02:41,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:02:41,901 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:02:41,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:02:41,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:02:41,908 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:02:41,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_add-1.i [2020-12-22 04:02:41,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd18bf873/307b54a05cf14aa9b551a2f5265f88bf/FLAG51d52bc8c [2020-12-22 04:02:42,724 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:02:42,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_add-1.i [2020-12-22 04:02:42,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd18bf873/307b54a05cf14aa9b551a2f5265f88bf/FLAG51d52bc8c [2020-12-22 04:02:42,949 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd18bf873/307b54a05cf14aa9b551a2f5265f88bf [2020-12-22 04:02:42,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:02:42,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:02:42,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:02:42,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:02:42,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:02:42,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:02:42" (1/1) ... [2020-12-22 04:02:42,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9db99c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:42, skipping insertion in model container [2020-12-22 04:02:42,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:02:42" (1/1) ... [2020-12-22 04:02:42,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:02:43,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:02:43,580 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/ldv-sets/test_add-1.i[25792,25805] [2020-12-22 04:02:43,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:02:43,613 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:02:43,740 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/ldv-sets/test_add-1.i[25792,25805] [2020-12-22 04:02:43,745 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:02:43,874 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:02:43,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43 WrapperNode [2020-12-22 04:02:43,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:02:43,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:02:43,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:02:43,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:02:43,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:43,905 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:43,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:02:43,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:02:43,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:02:43,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:02:43,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:43,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:43,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:43,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:43,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:44,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:44,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (1/1) ... [2020-12-22 04:02:44,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:02:44,015 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:02:44,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:02:44,018 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:02:44,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (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 04:02:44,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 04:02:44,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 04:02:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 04:02:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 04:02:44,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:02:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 04:02:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 04:02:44,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:02:44,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:02:44,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:02:44,816 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:02:44,816 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2020-12-22 04:02:44,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:02:44 BoogieIcfgContainer [2020-12-22 04:02:44,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:02:44,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:02:44,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:02:44,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:02:44,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:02:42" (1/3) ... [2020-12-22 04:02:44,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a9018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:02:44, skipping insertion in model container [2020-12-22 04:02:44,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:02:43" (2/3) ... [2020-12-22 04:02:44,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19a9018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:02:44, skipping insertion in model container [2020-12-22 04:02:44,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:02:44" (3/3) ... [2020-12-22 04:02:44,829 INFO L111 eAbstractionObserver]: Analyzing ICFG test_add-1.i [2020-12-22 04:02:44,837 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:02:44,846 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:02:44,870 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:02:44,903 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:02:44,903 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:02:44,903 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:02:44,903 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:02:44,904 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:02:44,904 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:02:44,904 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:02:44,904 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:02:44,924 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-22 04:02:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:02:44,931 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:02:44,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:02:44,933 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:02:44,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:02:44,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1191041087, now seen corresponding path program 1 times [2020-12-22 04:02:44,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:02:44,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421340825] [2020-12-22 04:02:44,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:02:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:02:45,162 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 04:02:45,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421340825] [2020-12-22 04:02:45,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:02:45,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:02:45,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445780481] [2020-12-22 04:02:45,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:02:45,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:02:45,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:02:45,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:02:45,195 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2020-12-22 04:02:45,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:02:45,219 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2020-12-22 04:02:45,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:02:45,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-12-22 04:02:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:02:45,232 INFO L225 Difference]: With dead ends: 45 [2020-12-22 04:02:45,232 INFO L226 Difference]: Without dead ends: 21 [2020-12-22 04:02:45,236 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 04:02:45,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-12-22 04:02:45,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-12-22 04:02:45,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 04:02:45,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-12-22 04:02:45,286 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2020-12-22 04:02:45,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:02:45,287 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-12-22 04:02:45,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:02:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-12-22 04:02:45,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:02:45,289 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:02:45,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:02:45,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:02:45,290 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:02:45,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:02:45,291 INFO L82 PathProgramCache]: Analyzing trace with hash -942277654, now seen corresponding path program 1 times [2020-12-22 04:02:45,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:02:45,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504068793] [2020-12-22 04:02:45,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:02:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:02:45,403 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 04:02:45,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504068793] [2020-12-22 04:02:45,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:02:45,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:02:45,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093536990] [2020-12-22 04:02:45,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:02:45,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:02:45,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:02:45,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:02:45,408 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2020-12-22 04:02:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:02:45,502 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-12-22 04:02:45,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:02:45,504 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:02:45,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:02:45,505 INFO L225 Difference]: With dead ends: 41 [2020-12-22 04:02:45,505 INFO L226 Difference]: Without dead ends: 32 [2020-12-22 04:02:45,507 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 04:02:45,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-12-22 04:02:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2020-12-22 04:02:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-22 04:02:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-12-22 04:02:45,514 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 12 [2020-12-22 04:02:45,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:02:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-12-22 04:02:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:02:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-12-22 04:02:45,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:02:45,516 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:02:45,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:02:45,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:02:45,517 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:02:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:02:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash 239429152, now seen corresponding path program 1 times [2020-12-22 04:02:45,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:02:45,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833623774] [2020-12-22 04:02:45,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:02:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:02:45,615 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 04:02:45,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833623774] [2020-12-22 04:02:45,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:02:45,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:02:45,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735164394] [2020-12-22 04:02:45,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:02:45,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:02:45,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:02:45,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:02:45,626 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 4 states. [2020-12-22 04:02:45,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:02:45,699 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-12-22 04:02:45,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:02:45,701 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:02:45,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:02:45,702 INFO L225 Difference]: With dead ends: 32 [2020-12-22 04:02:45,702 INFO L226 Difference]: Without dead ends: 27 [2020-12-22 04:02:45,703 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 04:02:45,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-22 04:02:45,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-12-22 04:02:45,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 04:02:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-12-22 04:02:45,709 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2020-12-22 04:02:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:02:45,709 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-12-22 04:02:45,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:02:45,709 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-12-22 04:02:45,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 04:02:45,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:02:45,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:02:45,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 04:02:45,711 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:02:45,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:02:45,712 INFO L82 PathProgramCache]: Analyzing trace with hash 241037866, now seen corresponding path program 1 times [2020-12-22 04:02:45,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:02:45,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311400011] [2020-12-22 04:02:45,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:02:45,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:02:45,838 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 04:02:45,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311400011] [2020-12-22 04:02:45,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:02:45,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 04:02:45,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921711542] [2020-12-22 04:02:45,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:02:45,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:02:45,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:02:45,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:02:45,842 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 4 states. [2020-12-22 04:02:45,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:02:45,975 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-12-22 04:02:45,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:02:45,976 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-22 04:02:45,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:02:45,977 INFO L225 Difference]: With dead ends: 38 [2020-12-22 04:02:45,977 INFO L226 Difference]: Without dead ends: 18 [2020-12-22 04:02:45,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 04:02:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-12-22 04:02:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-12-22 04:02:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 04:02:45,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-22 04:02:45,984 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2020-12-22 04:02:45,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:02:45,984 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-22 04:02:45,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:02:45,984 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-22 04:02:45,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 04:02:45,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:02:45,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:02:45,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 04:02:45,986 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:02:45,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:02:45,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1233808810, now seen corresponding path program 1 times [2020-12-22 04:02:45,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:02:45,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459456609] [2020-12-22 04:02:45,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:02:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:02:46,063 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:02:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:02:46,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:02:46,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:02:46,260 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:02:46,260 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 04:02:46,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:02:46 BoogieIcfgContainer [2020-12-22 04:02:46,345 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:02:46,346 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:02:46,346 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:02:46,346 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:02:46,347 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:02:44" (3/4) ... [2020-12-22 04:02:46,350 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:02:46,424 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/ldv-sets/test_add-1.i-witness.graphml [2020-12-22 04:02:46,425 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:02:46,427 INFO L168 Benchmark]: Toolchain (without parser) took 3471.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 121.0 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,428 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:02:46,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 916.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 132.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.45 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 129.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,430 INFO L168 Benchmark]: Boogie Preprocessor took 56.77 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 127.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,431 INFO L168 Benchmark]: RCFGBuilder took 804.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 104.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,432 INFO L168 Benchmark]: TraceAbstraction took 1524.43 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 124.1 MB in the end (delta: -20.0 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,432 INFO L168 Benchmark]: Witness Printer took 78.87 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 121.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:02:46,436 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 916.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 132.0 MB in the end (delta: -6.4 MB). Peak memory consumption was 28.0 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 80.45 ms. Allocated memory is still 151.0 MB. Free memory was 132.0 MB in the beginning and 129.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.77 ms. Allocated memory is still 151.0 MB. Free memory was 129.3 MB in the beginning and 127.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 804.35 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 104.2 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1524.43 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 124.1 MB in the end (delta: -20.0 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. * Witness Printer took 78.87 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 121.0 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: 667]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L662] struct ldv_list_head s1 = { &(s1), &(s1) }; VAL [s1={6:0}] [L665] int j = __VERIFIER_nondet_int(); [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [s1={6:0}] [L652] COND FALSE !(&m->list != (s)) VAL [s1={6:0}] [L657] return 0; VAL [s1={6:0}] [L633] COND TRUE !ldv_is_in_set(new, s) [L634] struct ldv_list_element *le; [L576] void *ptr = malloc(size); [L565] COND FALSE !(!cond) VAL [s1={6:0}] [L578] return ptr; VAL [s1={6:0}] [L635] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L636] le->e = new [L605] head->next [L593] next->prev = new [L594] new->next = next [L595] new->prev = prev [L596] prev->next = new VAL [s1={6:0}] [L651] struct ldv_list_element *m; [L652] EXPR (s)->next [L652] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L652] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [s1={6:0}] [L652] COND TRUE &m->list != (s) [L653] EXPR m->e VAL [s1={6:0}] [L653] COND TRUE m->e == e [L654] return 1; VAL [s1={6:0}] [L667] COND TRUE ldv_is_in_set(j, &s1) [L667] reach_error() VAL [s1={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 27 SDslu, 90 SDs, 0 SdLazy, 37 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, 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, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1584 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...