/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=DEEPEST --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/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:55:55,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:55:55,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:55:55,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:55:55,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:55:55,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:55:55,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:55:55,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:55:55,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:55:55,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:55:56,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:55:56,002 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:55:56,003 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:55:56,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:55:56,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:55:56,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:55:56,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:55:56,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:55:56,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:55:56,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:55:56,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:55:56,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:55:56,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:55:56,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:55:56,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:55:56,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:55:56,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:55:56,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:55:56,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:55:56,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:55:56,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:55:56,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:55:56,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:55:56,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:55:56,071 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:55:56,071 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:55:56,072 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:55:56,072 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:55:56,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:55:56,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:55:56,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:55:56,081 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 [2020-10-27 19:55:56,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:55:56,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:55:56,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:55:56,110 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:55:56,110 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:55:56,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:55:56,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:55:56,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:55:56,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:55:56,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:55:56,111 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:55:56,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:55:56,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:55:56,112 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:55:56,112 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:55:56,112 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:55:56,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:55:56,113 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:55:56,113 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:55:56,113 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:55:56,113 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:55:56,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:55:56,114 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:55:56,114 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:55:56,114 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:55:56,114 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:55:56,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:55:56,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:55:56,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:55:56,115 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:55:56,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:55:56,505 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:55:56,509 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:55:56,510 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:55:56,511 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:55:56,512 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-10-27 19:55:56,585 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2ce9697d/04bd8fd2d4a44b12ad06a5a1349343c8/FLAG3dab9f1a7 [2020-10-27 19:55:57,178 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:55:57,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-10-27 19:55:57,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2ce9697d/04bd8fd2d4a44b12ad06a5a1349343c8/FLAG3dab9f1a7 [2020-10-27 19:55:57,542 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d2ce9697d/04bd8fd2d4a44b12ad06a5a1349343c8 [2020-10-27 19:55:57,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:55:57,561 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:55:57,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:57,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:55:57,570 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:55:57,571 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa4103a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57, skipping insertion in model container [2020-10-27 19:55:57,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:55:57,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:55:57,784 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:57,795 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:55:57,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:55:57,830 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:55:57,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57 WrapperNode [2020-10-27 19:55:57,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:55:57,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:55:57,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:55:57,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:55:57,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,855 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (1/1) ... [2020-10-27 19:55:57,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:55:57,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:55:57,868 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:55:57,868 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:55:57,869 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (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 [2020-10-27 19:55:57,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:55:57,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:55:57,951 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:55:57,951 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:55:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:55:57,951 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:55:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:55:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:55:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:55:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:55:57,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:55:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:55:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:55:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:55:57,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:55:58,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:55:58,230 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 19:55:58,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:58 BoogieIcfgContainer [2020-10-27 19:55:58,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:55:58,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:55:58,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:55:58,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:55:58,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:55:57" (1/3) ... [2020-10-27 19:55:58,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d24f5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:58, skipping insertion in model container [2020-10-27 19:55:58,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:55:57" (2/3) ... [2020-10-27 19:55:58,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d24f5b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:55:58, skipping insertion in model container [2020-10-27 19:55:58,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:55:58" (3/3) ... [2020-10-27 19:55:58,242 INFO L111 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-10-27 19:55:58,256 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:55:58,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:55:58,287 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:55:58,350 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:55:58,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:55:58,351 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:55:58,351 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:55:58,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:55:58,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:55:58,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:55:58,352 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:55:58,376 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-27 19:55:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-27 19:55:58,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:55:58,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:55:58,387 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:55:58,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:55:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1175573984, now seen corresponding path program 1 times [2020-10-27 19:55:58,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:55:58,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767288264] [2020-10-27 19:55:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:55:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:58,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:58,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 19:55:58,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-27 19:55:58,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:55:58,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 19:55:58,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:55:58,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:55:58,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:55:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:55:58,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:55:59,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:55:59,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:55:59,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:55:59,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:55:59,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:55:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:55:59,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:55:59,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:55:59,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:55:59,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:55:59,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767288264] [2020-10-27 19:55:59,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:55:59,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:55:59,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238420807] [2020-10-27 19:55:59,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:55:59,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:55:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:55:59,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:55:59,056 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-10-27 19:55:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:55:59,123 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2020-10-27 19:55:59,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:55:59,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-27 19:55:59,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:55:59,133 INFO L225 Difference]: With dead ends: 23 [2020-10-27 19:55:59,133 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 19:55:59,137 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 [2020-10-27 19:55:59,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 19:55:59,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 19:55:59,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 19:55:59,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 19:55:59,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-27 19:55:59,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:55:59,167 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 19:55:59,168 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:55:59,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 19:55:59,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 19:55:59,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:55:59,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 19:55:59,334 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 19:55:59,334 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 19:55:59,334 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 19:55:59,335 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 19:55:59,335 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:59,335 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|)) [2020-10-27 19:55:59,335 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:59,335 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 19:55:59,336 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 19:55:59,336 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 19:55:59,336 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 19:55:59,336 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-10-27 19:55:59,336 INFO L274 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-10-27 19:55:59,336 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-27 19:55:59,337 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 8 18) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 19:55:59,337 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 8 18) no Hoare annotation was computed. [2020-10-27 19:55:59,337 INFO L274 CegarLoopResult]: For program point L14-2(lines 14 16) no Hoare annotation was computed. [2020-10-27 19:55:59,337 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 8 18) no Hoare annotation was computed. [2020-10-27 19:55:59,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:55:59 BoogieIcfgContainer [2020-10-27 19:55:59,344 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:55:59,346 INFO L168 Benchmark]: Toolchain (without parser) took 1790.82 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 98.5 MB in the end (delta: 32.7 MB). Peak memory consumption was 33.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:59,348 INFO L168 Benchmark]: CDTParser took 0.61 ms. Allocated memory is still 155.2 MB. Free memory was 127.0 MB in the beginning and 126.9 MB in the end (delta: 107.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:55:59,349 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.87 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 121.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:59,350 INFO L168 Benchmark]: Boogie Preprocessor took 34.30 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 120.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:59,351 INFO L168 Benchmark]: RCFGBuilder took 365.14 ms. Allocated memory is still 155.2 MB. Free memory was 120.0 MB in the beginning and 108.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:59,351 INFO L168 Benchmark]: TraceAbstraction took 1109.45 ms. Allocated memory is still 155.2 MB. Free memory was 108.1 MB in the beginning and 98.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.4 MB. Max. memory is 8.0 GB. [2020-10-27 19:55:59,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.61 ms. Allocated memory is still 155.2 MB. Free memory was 127.0 MB in the beginning and 126.9 MB in the end (delta: 107.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.87 ms. Allocated memory is still 155.2 MB. Free memory was 130.7 MB in the beginning and 121.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.30 ms. Allocated memory is still 155.2 MB. Free memory was 121.5 MB in the beginning and 120.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 365.14 ms. Allocated memory is still 155.2 MB. Free memory was 120.0 MB in the beginning and 108.5 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1109.45 ms. Allocated memory is still 155.2 MB. Free memory was 108.1 MB in the beginning and 98.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.4 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 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 12 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=18occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 42 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 352 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...