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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:56:05,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:56:05,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:56:05,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:56:05,124 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:56:05,125 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:56:05,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:56:05,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:56:05,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:56:05,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:56:05,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:56:05,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:56:05,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:56:05,135 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:56:05,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:56:05,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:56:05,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:56:05,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:56:05,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:56:05,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:56:05,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:56:05,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:56:05,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:56:05,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:56:05,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:56:05,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:56:05,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:56:05,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:56:05,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:56:05,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:56:05,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:56:05,160 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:56:05,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:56:05,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:56:05,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:56:05,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:56:05,165 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:56:05,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:56:05,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:56:05,170 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:56:05,171 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:56:05,174 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 [2019-10-15 02:56:05,200 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:56:05,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:56:05,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:56:05,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:56:05,203 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:56:05,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:56:05,204 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:56:05,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:56:05,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:56:05,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:56:05,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:56:05,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:56:05,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:56:05,206 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:56:05,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:56:05,206 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:56:05,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:56:05,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:56:05,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:56:05,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:56:05,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:56:05,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:56:05,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:56:05,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:56:05,207 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:56:05,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:56:05,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:56:05,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:56:05,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:56:05,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:56:05,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:56:05,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:56:05,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:56:05,519 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:56:05,520 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2019-10-15 02:56:05,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c9d418e/a5af0170f1cd4f9bac5ac8468cfa7eaa/FLAG2dca59a3e [2019-10-15 02:56:06,113 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:56:06,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2019-10-15 02:56:06,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c9d418e/a5af0170f1cd4f9bac5ac8468cfa7eaa/FLAG2dca59a3e [2019-10-15 02:56:06,437 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15c9d418e/a5af0170f1cd4f9bac5ac8468cfa7eaa [2019-10-15 02:56:06,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:56:06,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:56:06,456 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:06,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:56:06,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:56:06,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74194fe2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06, skipping insertion in model container [2019-10-15 02:56:06,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,472 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:56:06,490 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:56:06,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:06,718 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:56:06,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:56:06,752 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:56:06,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06 WrapperNode [2019-10-15 02:56:06,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:56:06,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:56:06,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:56:06,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:56:06,850 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (1/1) ... [2019-10-15 02:56:06,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:56:06,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:56:06,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:56:06,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:56:06,885 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (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 [2019-10-15 02:56:06,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:56:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:56:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 02:56:06,942 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:56:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:56:06,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 02:56:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 02:56:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2019-10-15 02:56:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2019-10-15 02:56:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:56:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:56:06,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:56:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:56:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:56:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:56:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:56:06,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:56:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:56:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:56:06,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:56:07,211 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:56:07,211 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 02:56:07,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:07 BoogieIcfgContainer [2019-10-15 02:56:07,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:56:07,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:56:07,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:56:07,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:56:07,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:56:06" (1/3) ... [2019-10-15 02:56:07,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa48632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:07, skipping insertion in model container [2019-10-15 02:56:07,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:56:06" (2/3) ... [2019-10-15 02:56:07,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa48632 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:56:07, skipping insertion in model container [2019-10-15 02:56:07,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:56:07" (3/3) ... [2019-10-15 02:56:07,238 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2019-10-15 02:56:07,252 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:56:07,280 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:56:07,303 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:56:07,344 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:56:07,344 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:56:07,344 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:56:07,344 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:56:07,344 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:56:07,345 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:56:07,345 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:56:07,345 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:56:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2019-10-15 02:56:07,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-10-15 02:56:07,372 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:56:07,373 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:56:07,375 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:56:07,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:56:07,381 INFO L82 PathProgramCache]: Analyzing trace with hash 683042385, now seen corresponding path program 1 times [2019-10-15 02:56:07,388 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:56:07,388 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843140704] [2019-10-15 02:56:07,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:07,389 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:56:07,389 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:56:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:56:07,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 02:56:07,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843140704] [2019-10-15 02:56:07,713 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:56:07,714 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:56:07,717 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054631426] [2019-10-15 02:56:07,723 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:56:07,725 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:56:07,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:56:07,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:56:07,745 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 5 states. [2019-10-15 02:56:07,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:56:07,802 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2019-10-15 02:56:07,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:56:07,804 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-10-15 02:56:07,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:56:07,813 INFO L225 Difference]: With dead ends: 22 [2019-10-15 02:56:07,813 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 02:56:07,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:56:07,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 02:56:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 02:56:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 02:56:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 02:56:07,846 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2019-10-15 02:56:07,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:56:07,847 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 02:56:07,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:56:07,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 02:56:07,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 02:56:07,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 02:56:07,876 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 02:56:07,876 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:07,876 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 02:56:07,876 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 02:56:07,877 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 02:56:07,877 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 02:56:07,877 INFO L443 ceAbstractionStarter]: For program point L34-1(line 34) no Hoare annotation was computed. [2019-10-15 02:56:07,877 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 27 36) the Hoare annotation is: true [2019-10-15 02:56:07,877 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2019-10-15 02:56:07,878 INFO L439 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: (= 4 |main_#t~mem4|) [2019-10-15 02:56:07,878 INFO L443 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2019-10-15 02:56:07,878 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2019-10-15 02:56:07,878 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2019-10-15 02:56:07,879 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2019-10-15 02:56:07,879 INFO L443 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2019-10-15 02:56:07,879 INFO L443 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2019-10-15 02:56:07,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:56:07 BoogieIcfgContainer [2019-10-15 02:56:07,883 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 02:56:07,886 INFO L168 Benchmark]: Toolchain (without parser) took 1433.67 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 132.1 MB in the end (delta: -30.5 MB). Peak memory consumption was 33.0 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:07,888 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-15 02:56:07,889 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.69 ms. Allocated memory is still 137.9 MB. Free memory was 101.4 MB in the beginning and 91.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:07,890 INFO L168 Benchmark]: Boogie Preprocessor took 128.93 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 179.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:07,891 INFO L168 Benchmark]: RCFGBuilder took 329.64 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 162.3 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:07,892 INFO L168 Benchmark]: TraceAbstraction took 669.27 ms. Allocated memory is still 201.3 MB. Free memory was 162.3 MB in the beginning and 132.1 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. [2019-10-15 02:56:07,896 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 297.69 ms. Allocated memory is still 137.9 MB. Free memory was 101.4 MB in the beginning and 91.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.93 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 91.3 MB in the beginning and 179.0 MB in the end (delta: -87.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 329.64 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 162.3 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 669.27 ms. Allocated memory is still 201.3 MB. Free memory was 162.3 MB in the beginning and 132.1 MB in the end (delta: 30.2 MB). Peak memory consumption was 30.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 16 locations, 1 error locations. Result: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 5 SDslu, 25 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...