/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/structure_assignment.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:38:33,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:38:33,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:38:33,925 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:38:33,926 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:38:33,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:38:33,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:38:33,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:38:33,943 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:38:33,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:38:33,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:38:33,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:38:33,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:38:33,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:38:33,957 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:38:33,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:38:33,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:38:33,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:38:33,971 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:38:33,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:38:33,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:38:33,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:38:33,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:38:33,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:38:33,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:38:33,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:38:33,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:38:33,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:38:33,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:38:33,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:38:33,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:38:33,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:38:33,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:38:33,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:38:33,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:38:33,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:38:33,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:38:33,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:38:33,995 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:38:33,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:38:33,996 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:38:33,997 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 [2020-10-28 14:38:34,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:38:34,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:38:34,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:38:34,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:38:34,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:38:34,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:38:34,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:38:34,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:38:34,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:38:34,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:38:34,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:38:34,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:38:34,027 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:38:34,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:38:34,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:38:34,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:38:34,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:38:34,028 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:38:34,028 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:38:34,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:38:34,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:38:34,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:38:34,029 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:38:34,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:38:34,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:38:34,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:38:34,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:38:34,030 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:38:34,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:38:34,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:38:34,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:38:34,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:38:34,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:38:34,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:38:34,448 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:38:34,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-10-28 14:38:34,527 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/520253280/4281a0275b9042449972407e3f4773b8/FLAG9932eae57 [2020-10-28 14:38:35,151 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:38:35,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/structure_assignment.i [2020-10-28 14:38:35,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/520253280/4281a0275b9042449972407e3f4773b8/FLAG9932eae57 [2020-10-28 14:38:35,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/520253280/4281a0275b9042449972407e3f4773b8 [2020-10-28 14:38:35,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:38:35,529 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:38:35,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:38:35,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:38:35,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:38:35,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d0b9ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35, skipping insertion in model container [2020-10-28 14:38:35,544 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:38:35,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:38:35,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:38:35,757 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:38:35,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:38:35,804 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:38:35,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35 WrapperNode [2020-10-28 14:38:35,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:38:35,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:38:35,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:38:35,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:38:35,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,840 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (1/1) ... [2020-10-28 14:38:35,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:38:35,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:38:35,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:38:35,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:38:35,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (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 [2020-10-28 14:38:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:38:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:38:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:38:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-28 14:38:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:38:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:38:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:38:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:38:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:38:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-28 14:38:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:38:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:38:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:38:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:38:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:38:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:38:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:38:36,384 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:38:36,384 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 14:38:36,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:38:36 BoogieIcfgContainer [2020-10-28 14:38:36,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:38:36,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:38:36,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:38:36,392 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:38:36,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:38:35" (1/3) ... [2020-10-28 14:38:36,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5ba460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:38:36, skipping insertion in model container [2020-10-28 14:38:36,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:38:35" (2/3) ... [2020-10-28 14:38:36,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c5ba460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:38:36, skipping insertion in model container [2020-10-28 14:38:36,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:38:36" (3/3) ... [2020-10-28 14:38:36,396 INFO L111 eAbstractionObserver]: Analyzing ICFG structure_assignment.i [2020-10-28 14:38:36,410 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:38:36,415 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:38:36,430 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:38:36,462 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:38:36,462 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:38:36,463 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:38:36,463 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:38:36,463 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:38:36,463 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:38:36,463 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:38:36,463 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:38:36,498 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-28 14:38:36,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-28 14:38:36,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:38:36,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:38:36,506 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:38:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:38:36,513 INFO L82 PathProgramCache]: Analyzing trace with hash 78725897, now seen corresponding path program 1 times [2020-10-28 14:38:36,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:38:36,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884013360] [2020-10-28 14:38:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:38:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:36,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:36,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:36,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 14:38:36,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:36,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-28 14:38:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:36,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 14:38:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:38:36,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 14:38:36,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:38:37,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:38:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:38:37,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:38:37,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:38:37,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:38:37,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:38:37,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 14:38:37,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:38:37,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:38:37,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:38:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:38:37,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:38:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 14:38:37,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:38:37,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884013360] [2020-10-28 14:38:37,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:38:37,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 14:38:37,164 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45351581] [2020-10-28 14:38:37,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 14:38:37,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:38:37,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 14:38:37,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:38:37,188 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-10-28 14:38:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:38:37,250 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-10-28 14:38:37,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 14:38:37,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-28 14:38:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:38:37,259 INFO L225 Difference]: With dead ends: 26 [2020-10-28 14:38:37,260 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:38:37,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 14:38:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:38:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:38:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:38:37,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:38:37,292 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-28 14:38:37,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:38:37,293 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:38:37,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 14:38:37,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:38:37,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:38:37,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:38:37,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:38:37,376 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-28 14:38:37,376 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-28 14:38:37,377 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-28 14:38:37,377 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-28 14:38:37,377 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:38:37,377 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|)) [2020-10-28 14:38:37,378 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:38:37,378 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-10-28 14:38:37,378 INFO L274 CegarLoopResult]: For program point __blast_assertEXIT(lines 9 12) no Hoare annotation was computed. [2020-10-28 14:38:37,378 INFO L274 CegarLoopResult]: For program point __blast_assertFINAL(lines 9 12) no Hoare annotation was computed. [2020-10-28 14:38:37,378 INFO L277 CegarLoopResult]: At program point __blast_assertENTRY(lines 9 12) the Hoare annotation is: true [2020-10-28 14:38:37,379 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:38:37,379 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:38:37,379 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:38:37,379 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:38:37,379 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 21 28) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-28 14:38:37,379 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 21 28) no Hoare annotation was computed. [2020-10-28 14:38:37,380 INFO L274 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-10-28 14:38:37,380 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 21 28) no Hoare annotation was computed. [2020-10-28 14:38:37,380 INFO L270 CegarLoopResult]: At program point L26-2(line 26) the Hoare annotation is: false [2020-10-28 14:38:37,380 INFO L274 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-10-28 14:38:37,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:38:37 BoogieIcfgContainer [2020-10-28 14:38:37,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:38:37,390 INFO L168 Benchmark]: Toolchain (without parser) took 1865.88 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 97.7 MB in the end (delta: 3.6 MB). Peak memory consumption was 35.2 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:37,391 INFO L168 Benchmark]: CDTParser took 1.42 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:38:37,392 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.37 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 90.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:37,393 INFO L168 Benchmark]: Boogie Preprocessor took 69.09 ms. Allocated memory is still 125.8 MB. Free memory was 90.9 MB in the beginning and 89.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:37,394 INFO L168 Benchmark]: RCFGBuilder took 503.92 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 77.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:37,395 INFO L168 Benchmark]: TraceAbstraction took 998.27 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 77.1 MB in the beginning and 97.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:38:37,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.42 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 273.37 ms. Allocated memory is still 125.8 MB. Free memory was 100.6 MB in the beginning and 90.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.09 ms. Allocated memory is still 125.8 MB. Free memory was 90.9 MB in the beginning and 89.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 503.92 ms. Allocated memory is still 125.8 MB. Free memory was 89.4 MB in the beginning and 77.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 998.27 ms. Allocated memory was 125.8 MB in the beginning and 156.2 MB in the end (delta: 30.4 MB). Free memory was 77.1 MB in the beginning and 97.7 MB in the end (delta: -20.6 MB). Peak memory consumption was 11.1 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: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, 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, 0.1s 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, 0.0s SatisfiabilityAnalysisTime, 0.4s 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...