/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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/test_union_cast.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:23:32,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:23:32,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:23:32,659 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:23:32,660 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:23:32,661 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:23:32,663 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:23:32,665 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:23:32,667 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:23:32,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:23:32,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:23:32,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:23:32,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:23:32,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:23:32,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:23:32,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:23:32,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:23:32,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:23:32,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:23:32,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:23:32,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:23:32,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:23:32,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:23:32,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:23:32,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:23:32,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:23:32,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:23:32,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:23:32,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:23:32,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:23:32,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:23:32,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:23:32,694 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:23:32,695 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:23:32,696 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:23:32,696 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:23:32,697 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:23:32,698 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:23:32,698 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:23:32,699 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:23:32,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:23:32,701 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 04:23:32,728 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:23:32,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:23:32,730 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:23:32,730 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:23:32,730 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:23:32,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:23:32,731 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:23:32,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:23:32,731 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:23:32,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:23:32,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:23:32,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:23:32,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:23:32,732 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:23:32,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:23:32,733 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:23:32,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:23:32,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:23:32,733 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:23:32,734 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:23:32,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:23:32,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:23:32,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:23:32,735 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:23:32,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:23:32,735 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:23:32,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:23:32,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:23:32,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:23:32,736 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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;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=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:23:33,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:23:33,250 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:23:33,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:23:33,257 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:23:33,258 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:23:33,259 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_union_cast.i [2020-09-25 04:23:33,340 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd7419ba0/644275e7a948443e83894ff41e29634d/FLAGde1068ea1 [2020-09-25 04:23:33,887 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:23:33,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test_union_cast.i [2020-09-25 04:23:33,895 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd7419ba0/644275e7a948443e83894ff41e29634d/FLAGde1068ea1 [2020-09-25 04:23:34,220 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd7419ba0/644275e7a948443e83894ff41e29634d [2020-09-25 04:23:34,233 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:23:34,243 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:23:34,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:34,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:23:34,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:23:34,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,257 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8d9ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34, skipping insertion in model container [2020-09-25 04:23:34,257 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:23:34,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:23:34,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:34,573 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:23:34,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:23:34,629 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:23:34,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34 WrapperNode [2020-09-25 04:23:34,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:23:34,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:23:34,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:23:34,633 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:23:34,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,791 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (1/1) ... [2020-09-25 04:23:34,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:23:34,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:23:34,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:23:34,808 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:23:34,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (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 04:23:34,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:23:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:23:34,906 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 04:23:34,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:23:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:23:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 04:23:34,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:23:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 04:23:34,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 04:23:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 04:23:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 04:23:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 04:23:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:23:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:23:34,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 04:23:35,146 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:23:35,146 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:23:35,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:35 BoogieIcfgContainer [2020-09-25 04:23:35,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:23:35,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:23:35,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:23:35,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:23:35,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:23:34" (1/3) ... [2020-09-25 04:23:35,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfff673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:35, skipping insertion in model container [2020-09-25 04:23:35,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:23:34" (2/3) ... [2020-09-25 04:23:35,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bfff673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:23:35, skipping insertion in model container [2020-09-25 04:23:35,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:23:35" (3/3) ... [2020-09-25 04:23:35,164 INFO L109 eAbstractionObserver]: Analyzing ICFG test_union_cast.i [2020-09-25 04:23:35,177 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:23:35,187 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:23:35,220 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:23:35,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:23:35,257 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:23:35,257 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:23:35,258 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:23:35,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:23:35,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:23:35,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:23:35,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:23:35,281 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 04:23:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-25 04:23:35,289 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:23:35,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:23:35,291 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:23:35,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:23:35,298 INFO L82 PathProgramCache]: Analyzing trace with hash 2097465754, now seen corresponding path program 1 times [2020-09-25 04:23:35,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:23:35,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2834003] [2020-09-25 04:23:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:23:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:35,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:35,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:23:35,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-09-25 04:23:35,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:35,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:23:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 04:23:35,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:23:35,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:23:35,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:23:35,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:23:35,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:23:35,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:23:35,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:23:35,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:23:35,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:23:35,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:23:35,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:23:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:23:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:23:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:23:35,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:23:35,892 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 04:23:35,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2834003] [2020-09-25 04:23:35,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:23:35,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:23:35,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048341975] [2020-09-25 04:23:35,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:23:35,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:23:35,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:23:35,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:23:35,921 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 04:23:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:23:36,019 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-09-25 04:23:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:23:36,022 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-25 04:23:36,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:23:36,031 INFO L225 Difference]: With dead ends: 33 [2020-09-25 04:23:36,031 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:23:36,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:23:36,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:23:36,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:23:36,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:23:36,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:23:36,069 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-25 04:23:36,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:23:36,070 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:23:36,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:23:36,070 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:23:36,070 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:23:36,071 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:23:36,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:23:36,127 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 04:23:36,127 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 04:23:36,127 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:23:36,128 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 04:23:36,128 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:23:36,128 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 04:23:36,128 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-09-25 04:23:36,129 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-09-25 04:23:36,129 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-09-25 04:23:36,129 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:23:36,129 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:23:36,129 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:23:36,130 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:23:36,130 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 04:23:36,130 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 32) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 04:23:36,130 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 04:23:36,131 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 04:23:36,131 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 04:23:36,131 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-09-25 04:23:36,131 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 04:23:36,131 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 04:23:36,132 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 04:23:36,132 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 32) no Hoare annotation was computed. [2020-09-25 04:23:36,132 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 04:23:36,132 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 32) no Hoare annotation was computed. [2020-09-25 04:23:36,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:23:36 BoogieIcfgContainer [2020-09-25 04:23:36,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:23:36,144 INFO L168 Benchmark]: Toolchain (without parser) took 1904.74 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 102.2 MB in the beginning and 123.8 MB in the end (delta: -21.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:36,145 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 04:23:36,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.54 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:36,148 INFO L168 Benchmark]: Boogie Preprocessor took 174.49 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:36,149 INFO L168 Benchmark]: RCFGBuilder took 345.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 167.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:36,150 INFO L168 Benchmark]: TraceAbstraction took 986.55 ms. Allocated memory is still 202.9 MB. Free memory was 166.8 MB in the beginning and 123.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. [2020-09-25 04:23:36,154 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.54 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 91.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 174.49 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 91.8 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 345.36 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 167.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 986.55 ms. Allocated memory is still 202.9 MB. Free memory was 166.8 MB in the beginning and 123.8 MB in the end (delta: 43.0 MB). Peak memory consumption was 43.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 15 SDtfs, 6 SDslu, 29 SDs, 0 SdLazy, 22 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 390 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...