/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:18:31,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:18:31,331 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:18:31,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:18:31,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:18:31,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:18:31,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:18:31,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:18:31,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:18:31,378 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:18:31,379 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:18:31,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:18:31,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:18:31,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:18:31,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:18:31,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:18:31,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:18:31,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:18:31,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:18:31,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:18:31,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:18:31,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:18:31,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:18:31,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:18:31,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:18:31,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:18:31,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:18:31,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:18:31,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:18:31,428 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:18:31,429 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:18:31,430 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:18:31,431 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:18:31,431 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:18:31,433 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:18:31,433 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:18:31,434 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:18:31,434 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:18:31,434 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:18:31,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:18:31,437 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:18:31,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 09:18:31,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:18:31,468 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:18:31,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:18:31,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:18:31,472 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:18:31,473 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:18:31,473 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:18:31,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:18:31,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:18:31,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:18:31,474 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:18:31,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:18:31,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:18:31,476 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:18:31,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:18:31,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:18:31,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:18:31,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:18:31,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:18:31,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:18:31,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:18:31,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:18:31,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:18:31,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:18:31,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:18:31,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:18:31,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:18:31,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:18:31,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:18:31,481 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:18:32,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:18:32,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:18:32,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:18:32,045 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:18:32,046 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:18:32,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-1.i [2020-10-29 09:18:32,133 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b24b247f/5460755edc984e3ca6dd52e7f9564913/FLAGeecca8c15 [2020-10-29 09:18:32,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:18:32,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-1.i [2020-10-29 09:18:32,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b24b247f/5460755edc984e3ca6dd52e7f9564913/FLAGeecca8c15 [2020-10-29 09:18:33,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3b24b247f/5460755edc984e3ca6dd52e7f9564913 [2020-10-29 09:18:33,276 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:18:33,283 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:18:33,285 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:18:33,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:18:33,289 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:18:33,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c6f9025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33, skipping insertion in model container [2020-10-29 09:18:33,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:18:33,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:18:33,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:18:33,501 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:18:33,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:18:33,542 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:18:33,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33 WrapperNode [2020-10-29 09:18:33,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:18:33,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:18:33,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:18:33,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:18:33,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,585 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... [2020-10-29 09:18:33,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:18:33,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:18:33,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:18:33,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:18:33,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:18:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:18:33,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:18:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:18:33,686 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-29 09:18:33,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:18:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:18:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:18:33,687 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:18:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:18:33,688 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-29 09:18:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:18:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:18:33,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:18:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:18:33,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:18:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:18:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:18:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:18:33,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:18:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:18:34,174 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:18:34,175 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 09:18:34,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:18:34 BoogieIcfgContainer [2020-10-29 09:18:34,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:18:34,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:18:34,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:18:34,188 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:18:34,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:18:33" (1/3) ... [2020-10-29 09:18:34,192 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bbb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:18:34, skipping insertion in model container [2020-10-29 09:18:34,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:18:33" (2/3) ... [2020-10-29 09:18:34,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66bbb028 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:18:34, skipping insertion in model container [2020-10-29 09:18:34,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:18:34" (3/3) ... [2020-10-29 09:18:34,198 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-1.i [2020-10-29 09:18:34,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:18:34,219 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:18:34,233 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:18:34,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:18:34,276 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:18:34,276 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:18:34,277 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:18:34,277 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:18:34,277 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:18:34,277 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:18:34,277 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:18:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-29 09:18:34,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-29 09:18:34,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:18:34,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:18:34,315 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:18:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:18:34,326 INFO L82 PathProgramCache]: Analyzing trace with hash 672820483, now seen corresponding path program 1 times [2020-10-29 09:18:34,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:18:34,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [820167050] [2020-10-29 09:18:34,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:18:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:34,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 09:18:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 408 [2020-10-29 09:18:35,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:35,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:18:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:18:35,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:18:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:18:35,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:18:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:18:35,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:18:35,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:18:35,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:18:35,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:18:35,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:18:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:18:35,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:18:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:18:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:18:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:18:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:18:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:18:35,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [820167050] [2020-10-29 09:18:35,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:18:35,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:18:35,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448529009] [2020-10-29 09:18:35,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:18:35,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:18:35,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:18:35,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:18:35,255 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-10-29 09:18:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:18:35,320 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-10-29 09:18:35,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:18:35,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-29 09:18:35,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:18:35,329 INFO L225 Difference]: With dead ends: 26 [2020-10-29 09:18:35,329 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:18:35,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:18:35,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:18:35,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:18:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:18:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:18:35,361 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-29 09:18:35,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:18:35,362 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:18:35,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:18:35,362 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:18:35,362 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:18:35,363 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:18:35,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:18:35,522 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:18:35,522 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:18:35,522 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:18:35,522 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:18:35,523 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:18:35,523 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 09:18:35,523 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:18:35,523 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-29 09:18:35,524 INFO L274 CegarLoopResult]: For program point __blast_assertEXIT(lines 10 13) no Hoare annotation was computed. [2020-10-29 09:18:35,524 INFO L274 CegarLoopResult]: For program point __blast_assertFINAL(lines 10 13) no Hoare annotation was computed. [2020-10-29 09:18:35,524 INFO L277 CegarLoopResult]: At program point __blast_assertENTRY(lines 10 13) the Hoare annotation is: true [2020-10-29 09:18:35,524 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:18:35,524 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:18:35,524 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:18:35,524 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:18:35,525 INFO L270 CegarLoopResult]: At program point L34-2(line 34) the Hoare annotation is: false [2020-10-29 09:18:35,525 INFO L274 CegarLoopResult]: For program point L34-3(line 34) no Hoare annotation was computed. [2020-10-29 09:18:35,525 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 27 36) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-29 09:18:35,525 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 27 36) no Hoare annotation was computed. [2020-10-29 09:18:35,525 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 27 36) no Hoare annotation was computed. [2020-10-29 09:18:35,525 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-10-29 09:18:35,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:18:35 BoogieIcfgContainer [2020-10-29 09:18:35,532 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:18:35,535 INFO L168 Benchmark]: Toolchain (without parser) took 2255.50 ms. Allocated memory is still 160.4 MB. Free memory was 135.4 MB in the beginning and 84.4 MB in the end (delta: 51.0 MB). Peak memory consumption was 51.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:18:35,536 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:18:35,537 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.76 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:18:35,538 INFO L168 Benchmark]: Boogie Preprocessor took 43.18 ms. Allocated memory is still 160.4 MB. Free memory was 124.8 MB in the beginning and 123.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:18:35,539 INFO L168 Benchmark]: RCFGBuilder took 588.23 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 142.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-10-29 09:18:35,540 INFO L168 Benchmark]: TraceAbstraction took 1347.87 ms. Allocated memory is still 160.4 MB. Free memory was 142.6 MB in the beginning and 84.4 MB in the end (delta: 58.2 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2020-10-29 09:18:35,543 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.76 ms. Allocated memory is still 160.4 MB. Free memory was 134.8 MB in the beginning and 124.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.18 ms. Allocated memory is still 160.4 MB. Free memory was 124.8 MB in the beginning and 123.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 588.23 ms. Allocated memory is still 160.4 MB. Free memory was 123.3 MB in the beginning and 142.9 MB in the end (delta: -19.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1347.87 ms. Allocated memory is still 160.4 MB. Free memory was 142.6 MB in the beginning and 84.4 MB in the end (delta: 58.2 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 43 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...