/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:19:04,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:19:04,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:19:04,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:19:04,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:19:04,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:19:04,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:19:04,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:19:04,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:19:04,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:19:04,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:19:04,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:19:04,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:19:04,913 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:19:04,914 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:19:04,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:19:04,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:19:04,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:19:04,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:19:04,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:19:04,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:19:04,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:19:04,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:19:04,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:19:04,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:19:04,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:19:04,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:19:04,929 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:19:04,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:19:04,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:19:04,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:19:04,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:19:04,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:19:04,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:19:04,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:19:04,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:19:04,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:19:04,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:19:04,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:19:04,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:19:04,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:19:04,943 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:19:04,957 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:19:04,957 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:19:04,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:19:04,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:19:04,959 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:19:04,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:19:04,959 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:19:04,959 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:19:04,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:19:04,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:19:04,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:19:04,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:19:04,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:19:04,961 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:19:04,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:19:04,961 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:19:04,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:19:04,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:19:04,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:19:04,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:19:04,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:19:04,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:19:04,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:19:04,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:19:04,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:19:04,963 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:19:04,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:19:04,963 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:19:04,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:19:04,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:19:05,246 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:19:05,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:19:05,263 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:19:05,265 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:19:05,265 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:19:05,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-07 11:19:05,332 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df62ee22d/60302cefa2f443ed94a73177cd884331/FLAG6c60eedb2 [2020-07-07 11:19:05,772 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:19:05,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-07-07 11:19:05,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df62ee22d/60302cefa2f443ed94a73177cd884331/FLAG6c60eedb2 [2020-07-07 11:19:06,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df62ee22d/60302cefa2f443ed94a73177cd884331 [2020-07-07 11:19:06,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:19:06,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:19:06,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:19:06,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:19:06,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:19:06,155 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@773b631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06, skipping insertion in model container [2020-07-07 11:19:06,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:19:06,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:19:06,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:19:06,372 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:19:06,390 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:19:06,406 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:19:06,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06 WrapperNode [2020-07-07 11:19:06,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:19:06,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:19:06,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:19:06,408 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:19:06,501 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,512 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,521 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (1/1) ... [2020-07-07 11:19:06,540 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:19:06,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:19:06,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:19:06,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:19:06,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (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 [2020-07-07 11:19:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:19:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:19:06,599 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 11:19:06,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:19:06,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:19:06,872 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:19:06,872 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:19:06,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:19:06 BoogieIcfgContainer [2020-07-07 11:19:06,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:19:06,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:19:06,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:19:06,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:19:06,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:19:06" (1/3) ... [2020-07-07 11:19:06,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc7ea85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:19:06, skipping insertion in model container [2020-07-07 11:19:06,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:19:06" (2/3) ... [2020-07-07 11:19:06,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bc7ea85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:19:06, skipping insertion in model container [2020-07-07 11:19:06,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:19:06" (3/3) ... [2020-07-07 11:19:06,891 INFO L109 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-07-07 11:19:06,903 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:19:06,916 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:19:06,941 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:19:06,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:19:06,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:19:06,966 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:19:06,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:19:06,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:19:06,967 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:19:06,967 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:19:06,967 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:19:06,986 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-07-07 11:19:06,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:19:06,993 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:19:06,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:19:06,995 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:19:07,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:19:07,002 INFO L82 PathProgramCache]: Analyzing trace with hash 668850033, now seen corresponding path program 1 times [2020-07-07 11:19:07,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:19:07,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959553393] [2020-07-07 11:19:07,013 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:19:07,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:19:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:19:07,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:19:07,248 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959553393] [2020-07-07 11:19:07,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:19:07,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:19:07,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324690555] [2020-07-07 11:19:07,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:19:07,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:19:07,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:19:07,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:19:07,270 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-07-07 11:19:07,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:19:07,380 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2020-07-07 11:19:07,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:19:07,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-07-07 11:19:07,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:19:07,394 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:19:07,394 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 11:19:07,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:19:07,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 11:19:07,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2020-07-07 11:19:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-07 11:19:07,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-07 11:19:07,442 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 13 [2020-07-07 11:19:07,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:19:07,443 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-07 11:19:07,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:19:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-07 11:19:07,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:19:07,444 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:19:07,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:19:07,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:19:07,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:19:07,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:19:07,446 INFO L82 PathProgramCache]: Analyzing trace with hash 667002991, now seen corresponding path program 1 times [2020-07-07 11:19:07,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:19:07,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891320734] [2020-07-07 11:19:07,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:19:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:19:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:19:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:19:07,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891320734] [2020-07-07 11:19:07,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:19:07,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:19:07,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304844761] [2020-07-07 11:19:07,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:19:07,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:19:07,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:19:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:19:07,615 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2020-07-07 11:19:07,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:19:07,753 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-07-07 11:19:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:19:07,755 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-07 11:19:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:19:07,756 INFO L225 Difference]: With dead ends: 23 [2020-07-07 11:19:07,756 INFO L226 Difference]: Without dead ends: 14 [2020-07-07 11:19:07,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-07 11:19:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-07 11:19:07,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-07 11:19:07,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-07 11:19:07,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 13 transitions. [2020-07-07 11:19:07,766 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 13 transitions. Word has length 13 [2020-07-07 11:19:07,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:19:07,766 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 13 transitions. [2020-07-07 11:19:07,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:19:07,766 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 13 transitions. [2020-07-07 11:19:07,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 11:19:07,767 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:19:07,768 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:19:07,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:19:07,769 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:19:07,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:19:07,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1851109901, now seen corresponding path program 1 times [2020-07-07 11:19:07,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:19:07,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030677723] [2020-07-07 11:19:07,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:19:07,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:19:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:19:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:19:07,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030677723] [2020-07-07 11:19:07,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:19:07,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:19:07,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427802085] [2020-07-07 11:19:07,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:19:07,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:19:07,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:19:07,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:19:07,951 INFO L87 Difference]: Start difference. First operand 14 states and 13 transitions. Second operand 8 states. [2020-07-07 11:19:08,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:19:08,023 INFO L93 Difference]: Finished difference Result 14 states and 13 transitions. [2020-07-07 11:19:08,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:19:08,023 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-07 11:19:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:19:08,024 INFO L225 Difference]: With dead ends: 14 [2020-07-07 11:19:08,025 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:19:08,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-07 11:19:08,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:19:08,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:19:08,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:19:08,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:19:08,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-07-07 11:19:08,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:19:08,029 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:19:08,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:19:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:19:08,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:19:08,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:19:08,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:19:08,077 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:19:08,078 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-07 11:19:08,078 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:19:08,078 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:19:08,078 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:19:08,078 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:19:08,079 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:19:08,079 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 29) no Hoare annotation was computed. [2020-07-07 11:19:08,079 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-07-07 11:19:08,079 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2020-07-07 11:19:08,079 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-07-07 11:19:08,080 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-07-07 11:19:08,080 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 29) no Hoare annotation was computed. [2020-07-07 11:19:08,081 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-07-07 11:19:08,081 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 29) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-07 11:19:08,081 INFO L264 CegarLoopResult]: At program point L22(lines 12 29) the Hoare annotation is: false [2020-07-07 11:19:08,081 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-07-07 11:19:08,082 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 20) no Hoare annotation was computed. [2020-07-07 11:19:08,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:19:08 BoogieIcfgContainer [2020-07-07 11:19:08,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:19:08,101 INFO L168 Benchmark]: Toolchain (without parser) took 1951.24 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 102.1 MB in the beginning and 90.4 MB in the end (delta: 11.6 MB). Peak memory consumption was 75.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:19:08,103 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 11:19:08,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.48 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:19:08,107 INFO L168 Benchmark]: Boogie Preprocessor took 131.93 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.4 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:19:08,109 INFO L168 Benchmark]: RCFGBuilder took 337.86 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 165.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:19:08,111 INFO L168 Benchmark]: TraceAbstraction took 1217.95 ms. Allocated memory is still 201.3 MB. Free memory was 164.4 MB in the beginning and 90.4 MB in the end (delta: 73.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:19:08,120 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.48 ms. Allocated memory is still 137.4 MB. Free memory was 101.9 MB in the beginning and 92.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.93 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 92.0 MB in the beginning and 179.4 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 337.86 ms. Allocated memory is still 201.3 MB. Free memory was 179.4 MB in the beginning and 165.1 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1217.95 ms. Allocated memory is still 201.3 MB. Free memory was 164.4 MB in the beginning and 90.4 MB in the end (delta: 73.9 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 27]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 28 SDslu, 69 SDs, 0 SdLazy, 123 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 16 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1536 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 correct! Received shutdown request...