/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=DEEPEST --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/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:58:30,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:58:30,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:58:30,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:58:30,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:58:30,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:58:30,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:58:30,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:58:30,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:58:30,183 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:58:30,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:58:30,185 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:58:30,185 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:58:30,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:58:30,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:58:30,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:58:30,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:58:30,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:58:30,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:58:30,205 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:58:30,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:58:30,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:58:30,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:58:30,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:58:30,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:58:30,223 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:58:30,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:58:30,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:58:30,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:58:30,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:58:30,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:58:30,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:58:30,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:58:30,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:58:30,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:58:30,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:58:30,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:58:30,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:58:30,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:58:30,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:58:30,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:58:30,245 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 00:58:30,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:58:30,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:58:30,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:58:30,294 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:58:30,294 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:58:30,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:58:30,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:58:30,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:58:30,295 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:58:30,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:58:30,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:58:30,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:58:30,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:58:30,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:58:30,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:58:30,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:58:30,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:58:30,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:58:30,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:58:30,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:58:30,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:58:30,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:58:30,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:58:30,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:58:30,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:58:30,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:58:30,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:58:30,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:58:30,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:58:30,301 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:58:30,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:58:30,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:58:30,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:58:30,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:58:30,820 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:58:30,821 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-09-25 00:58:30,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a7289fd7/af3c5f8bc9b44b668c5f183787def811/FLAG2a58c21fa [2020-09-25 00:58:31,455 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:58:31,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2020-09-25 00:58:31,463 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a7289fd7/af3c5f8bc9b44b668c5f183787def811/FLAG2a58c21fa [2020-09-25 00:58:31,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3a7289fd7/af3c5f8bc9b44b668c5f183787def811 [2020-09-25 00:58:31,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:58:31,821 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:58:31,822 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:31,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:58:31,826 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:58:31,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:31" (1/1) ... [2020-09-25 00:58:31,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598df217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:31, skipping insertion in model container [2020-09-25 00:58:31,832 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:58:31" (1/1) ... [2020-09-25 00:58:31,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:58:31,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:58:32,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:32,107 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:58:32,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:58:32,142 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:58:32,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32 WrapperNode [2020-09-25 00:58:32,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:58:32,144 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:58:32,144 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:58:32,144 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:58:32,157 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,166 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (1/1) ... [2020-09-25 00:58:32,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:58:32,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:58:32,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:58:32,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:58:32,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (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 00:58:32,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:58:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:58:32,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:58:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:58:32,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:58:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:58:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 00:58:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:58:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:58:32,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:58:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:58:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:58:32,544 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:58:32,545 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:58:32,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:32 BoogieIcfgContainer [2020-09-25 00:58:32,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:58:32,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:58:32,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:58:32,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:58:32,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:58:31" (1/3) ... [2020-09-25 00:58:32,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338bdb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:32, skipping insertion in model container [2020-09-25 00:58:32,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:58:32" (2/3) ... [2020-09-25 00:58:32,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@338bdb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:58:32, skipping insertion in model container [2020-09-25 00:58:32,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:58:32" (3/3) ... [2020-09-25 00:58:32,561 INFO L109 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2020-09-25 00:58:32,575 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:58:32,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:58:32,610 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:58:32,638 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:58:32,639 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:58:32,639 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:58:32,639 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:58:32,639 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:58:32,639 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:58:32,639 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:58:32,639 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:58:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-09-25 00:58:32,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 00:58:32,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:58:32,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:58:32,668 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:58:32,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:58:32,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1049886255, now seen corresponding path program 1 times [2020-09-25 00:58:32,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:58:32,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1387476391] [2020-09-25 00:58:32,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:58:32,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:32,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:33,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:33,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:58:33,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:33,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-09-25 00:58:33,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:58:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:58:33,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:58:33,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 00:58:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:58:33,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:58:33,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:58:33,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:58:33,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:58:33,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:58:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 00:58:33,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:58:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:58:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:58:33,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:58:33,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:58:33,357 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 00:58:33,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1387476391] [2020-09-25 00:58:33,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:58:33,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 00:58:33,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885255484] [2020-09-25 00:58:33,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 00:58:33,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:58:33,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 00:58:33,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 00:58:33,433 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 8 states. [2020-09-25 00:58:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:58:33,614 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2020-09-25 00:58:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 00:58:33,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-09-25 00:58:33,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:58:33,626 INFO L225 Difference]: With dead ends: 34 [2020-09-25 00:58:33,626 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 00:58:33,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:58:33,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 00:58:33,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 00:58:33,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 00:58:33,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 00:58:33,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-25 00:58:33,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:58:33,658 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 00:58:33,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 00:58:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 00:58:33,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 00:58:33,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:58:33,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 00:58:33,715 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 00:58:33,715 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 00:58:33,715 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:58:33,716 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 00:58:33,716 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:58:33,716 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 00:58:33,716 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 00:58:33,717 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 00:58:33,717 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 00:58:33,717 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-09-25 00:58:33,717 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 6 16) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 00:58:33,717 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 6 16) no Hoare annotation was computed. [2020-09-25 00:58:33,718 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-25 00:58:33,718 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 6 16) no Hoare annotation was computed. [2020-09-25 00:58:33,718 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 00:58:33,718 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 00:58:33,718 INFO L268 CegarLoopResult]: For program point L12-1(lines 12 14) no Hoare annotation was computed. [2020-09-25 00:58:33,718 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-25 00:58:33,719 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 00:58:33,719 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-25 00:58:33,719 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 00:58:33,719 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 00:58:33,719 INFO L268 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-09-25 00:58:33,719 INFO L268 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-09-25 00:58:33,720 INFO L268 CegarLoopResult]: For program point L12-5(lines 12 14) no Hoare annotation was computed. [2020-09-25 00:58:33,720 INFO L268 CegarLoopResult]: For program point L8-2(line 8) no Hoare annotation was computed. [2020-09-25 00:58:33,720 INFO L268 CegarLoopResult]: For program point L8-3(line 8) no Hoare annotation was computed. [2020-09-25 00:58:33,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:58:33 BoogieIcfgContainer [2020-09-25 00:58:33,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:58:33,733 INFO L168 Benchmark]: Toolchain (without parser) took 1914.13 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 102.7 MB in the beginning and 109.3 MB in the end (delta: -6.6 MB). Peak memory consumption was 55.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:33,736 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-25 00:58:33,737 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.57 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:33,738 INFO L168 Benchmark]: Boogie Preprocessor took 32.81 ms. Allocated memory is still 138.9 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:33,740 INFO L168 Benchmark]: RCFGBuilder took 372.32 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.0 MB in the beginning and 166.5 MB in the end (delta: -75.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:33,741 INFO L168 Benchmark]: TraceAbstraction took 1177.70 ms. Allocated memory is still 200.8 MB. Free memory was 165.8 MB in the beginning and 109.3 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. [2020-09-25 00:58:33,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.57 ms. Allocated memory is still 138.9 MB. Free memory was 102.1 MB in the beginning and 92.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.81 ms. Allocated memory is still 138.9 MB. Free memory was 92.6 MB in the beginning and 91.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.32 ms. Allocated memory was 138.9 MB in the beginning and 200.8 MB in the end (delta: 61.9 MB). Free memory was 91.0 MB in the beginning and 166.5 MB in the end (delta: -75.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1177.70 ms. Allocated memory is still 200.8 MB. Free memory was 165.8 MB in the beginning and 109.3 MB in the end (delta: 56.5 MB). Peak memory consumption was 56.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 10 SDslu, 52 SDs, 0 SdLazy, 52 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 LocationsWithAnnotation, 4 PreInvPairs, 4 NumberOfFragments, 15 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 1258 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...