/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 --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 SingleStatement --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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:06:19,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:06:19,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:06:19,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:06:19,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:06:19,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:06:19,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:06:19,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:06:19,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:06:19,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:06:19,183 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:06:19,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:06:19,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:06:19,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:06:19,189 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:06:19,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:06:19,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:06:19,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:06:19,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:06:19,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:06:19,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:06:19,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:06:19,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:06:19,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:06:19,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:06:19,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:06:19,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:06:19,223 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:06:19,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:06:19,226 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:06:19,226 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:06:19,227 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:06:19,228 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:06:19,229 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:06:19,230 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:06:19,231 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:06:19,232 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:06:19,232 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:06:19,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:06:19,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:06:19,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:06:19,235 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 [2020-09-25 02:06:19,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:06:19,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:06:19,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:06:19,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:06:19,304 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:06:19,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:06:19,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:06:19,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:06:19,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:06:19,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:06:19,305 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:06:19,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:06:19,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:06:19,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:06:19,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:06:19,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:06:19,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:06:19,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:06:19,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:06:19,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:06:19,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:06:19,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:06:19,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:06:19,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:06:19,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:06:19,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:06:19,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:06:19,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:06:19,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:06:19,310 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=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=NARROWEST;log-additional-information=true; [2020-09-25 02:06:19,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:06:19,872 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:06:19,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:06:19,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:06:19,880 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:06:19,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i [2020-09-25 02:06:19,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5951a938c/003ebdf47ad54dc2b4ee18540231d99e/FLAG2c8af8d58 [2020-09-25 02:06:20,541 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:06:20,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_noptr-1.i [2020-09-25 02:06:20,551 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5951a938c/003ebdf47ad54dc2b4ee18540231d99e/FLAG2c8af8d58 [2020-09-25 02:06:20,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5951a938c/003ebdf47ad54dc2b4ee18540231d99e [2020-09-25 02:06:20,883 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:06:20,889 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:06:20,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:20,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:06:20,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:06:20,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:20" (1/1) ... [2020-09-25 02:06:20,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:20, skipping insertion in model container [2020-09-25 02:06:20,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:06:20" (1/1) ... [2020-09-25 02:06:20,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:06:20,948 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:06:21,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:21,155 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:06:21,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:06:21,203 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:06:21,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21 WrapperNode [2020-09-25 02:06:21,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:06:21,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:06:21,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:06:21,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:06:21,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (1/1) ... [2020-09-25 02:06:21,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:06:21,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:06:21,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:06:21,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:06:21,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (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 [2020-09-25 02:06:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:06:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:06:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:06:21,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:06:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:06:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:06:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-25 02:06:21,414 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-09-25 02:06:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-09-25 02:06:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:06:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:06:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 02:06:21,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:06:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:06:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:06:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:06:21,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:06:21,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:06:21,641 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:06:21,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:21 BoogieIcfgContainer [2020-09-25 02:06:21,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:06:21,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:06:21,649 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:06:21,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:06:21,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:06:20" (1/3) ... [2020-09-25 02:06:21,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fcc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:21, skipping insertion in model container [2020-09-25 02:06:21,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:06:21" (2/3) ... [2020-09-25 02:06:21,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74fcc17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:06:21, skipping insertion in model container [2020-09-25 02:06:21,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:06:21" (3/3) ... [2020-09-25 02:06:21,658 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-1.i [2020-09-25 02:06:21,671 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:06:21,683 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:06:21,733 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:06:21,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:06:21,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:06:21,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:06:21,801 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:06:21,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:06:21,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:06:21,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:06:21,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:06:21,825 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-09-25 02:06:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:06:21,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:06:21,834 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:06:21,834 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:06:21,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:06:21,841 INFO L82 PathProgramCache]: Analyzing trace with hash 515777756, now seen corresponding path program 1 times [2020-09-25 02:06:21,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:06:21,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291530725] [2020-09-25 02:06:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:06:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:22,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:22,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:22,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:06:22,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:22,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 02:06:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:06:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 02:06:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:06:22,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 02:06:22,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:06:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:06:22,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:06:22,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:06:22,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:06:22,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:06:22,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:06:22,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:06:22,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:06:22,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:06:22,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:06:22,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:06:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:06:22,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291530725] [2020-09-25 02:06:22,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:06:22,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 02:06:22,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285001753] [2020-09-25 02:06:22,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:06:22,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:06:22,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:06:22,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:06:22,539 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 7 states. [2020-09-25 02:06:22,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:06:22,708 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2020-09-25 02:06:22,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:06:22,710 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-09-25 02:06:22,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:06:22,719 INFO L225 Difference]: With dead ends: 38 [2020-09-25 02:06:22,720 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:06:22,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:06:22,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:06:22,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:06:22,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:06:22,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:06:22,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-25 02:06:22,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:06:22,752 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:06:22,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:06:22,752 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:06:22,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:06:22,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:06:22,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:06:22,817 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 02:06:22,817 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 02:06:22,817 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:06:22,818 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 02:06:22,818 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:06:22,818 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:06:22,818 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 02:06:22,818 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:06:22,819 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:06:22,819 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-09-25 02:06:22,819 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (= (select (select |#memory_int| |main_~#good~0.base|) (+ |main_~#good~0.offset| 8)) 4) (= |main_#t~mem0| 4)) [2020-09-25 02:06:22,819 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 02:06:22,819 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 02:06:22,820 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 27 33) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 02:06:22,820 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 02:06:22,820 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 02:06:22,820 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 02:06:22,820 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 02:06:22,820 INFO L268 CegarLoopResult]: For program point L29-4(line 29) no Hoare annotation was computed. [2020-09-25 02:06:22,821 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 27 33) no Hoare annotation was computed. [2020-09-25 02:06:22,821 INFO L268 CegarLoopResult]: For program point L29-5(line 29) no Hoare annotation was computed. [2020-09-25 02:06:22,821 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 27 33) no Hoare annotation was computed. [2020-09-25 02:06:22,821 INFO L268 CegarLoopResult]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2020-09-25 02:06:22,821 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2020-09-25 02:06:22,822 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2020-09-25 02:06:22,822 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 02:06:22,822 INFO L268 CegarLoopResult]: For program point L3(lines 3 5) no Hoare annotation was computed. [2020-09-25 02:06:22,822 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-09-25 02:06:22,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:06:22 BoogieIcfgContainer [2020-09-25 02:06:22,831 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:06:22,834 INFO L168 Benchmark]: Toolchain (without parser) took 1948.07 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 100.7 MB in the beginning and 107.9 MB in the end (delta: -7.3 MB). Peak memory consumption was 54.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:22,836 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 138.4 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:06:22,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.30 ms. Allocated memory is still 138.4 MB. Free memory was 100.1 MB in the beginning and 89.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:22,838 INFO L168 Benchmark]: Boogie Preprocessor took 120.06 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 89.7 MB in the beginning and 177.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:22,839 INFO L168 Benchmark]: RCFGBuilder took 321.69 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 163.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:22,840 INFO L168 Benchmark]: TraceAbstraction took 1182.19 ms. Allocated memory is still 199.8 MB. Free memory was 162.8 MB in the beginning and 107.9 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 MB. Max. memory is 7.1 GB. [2020-09-25 02:06:22,844 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 138.4 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.30 ms. Allocated memory is still 138.4 MB. Free memory was 100.1 MB in the beginning and 89.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.06 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 89.7 MB in the beginning and 177.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.69 ms. Allocated memory is still 199.8 MB. Free memory was 177.7 MB in the beginning and 163.5 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1182.19 ms. Allocated memory is still 199.8 MB. Free memory was 162.8 MB in the beginning and 107.9 MB in the end (delta: 54.9 MB). Peak memory consumption was 54.9 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, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 12 SDslu, 67 SDs, 0 SdLazy, 43 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 29 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 656 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...