/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=SHALLOWEST --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/test15.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:51:21,985 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:51:21,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:51:22,031 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:51:22,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:51:22,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:51:22,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:51:22,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:51:22,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:51:22,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:51:22,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:51:22,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:51:22,054 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:51:22,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:51:22,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:51:22,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:51:22,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:51:22,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:51:22,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:51:22,073 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:51:22,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:51:22,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:51:22,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:51:22,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:51:22,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:51:22,091 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:51:22,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:51:22,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:51:22,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:51:22,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:51:22,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:51:22,103 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:51:22,104 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:51:22,107 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:51:22,108 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:51:22,108 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:51:22,109 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:51:22,109 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:51:22,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:51:22,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:51:22,112 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:51:22,113 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 [2020-09-24 23:51:22,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:51:22,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:51:22,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:51:22,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:51:22,159 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:51:22,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:51:22,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:51:22,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:51:22,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:51:22,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:51:22,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:51:22,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:51:22,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:51:22,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:51:22,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:51:22,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:51:22,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:51:22,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:51:22,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:51:22,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:51:22,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:51:22,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:51:22,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:51:22,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:51:22,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:51:22,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:51:22,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:51:22,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:51:22,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:51:22,166 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:51:22,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:51:22,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:51:22,659 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:51:22,662 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:51:22,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:51:22,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test15.c [2020-09-24 23:51:22,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bfa9b5d/62469ab1563048948883ca845fa6648d/FLAG4c62f39c7 [2020-09-24 23:51:23,289 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:51:23,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test15.c [2020-09-24 23:51:23,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bfa9b5d/62469ab1563048948883ca845fa6648d/FLAG4c62f39c7 [2020-09-24 23:51:23,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10bfa9b5d/62469ab1563048948883ca845fa6648d [2020-09-24 23:51:23,693 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:51:23,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:51:23,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:23,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:51:23,708 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:51:23,709 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:23,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db04ff2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23, skipping insertion in model container [2020-09-24 23:51:23,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:23,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:51:23,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:51:23,947 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:23,961 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:51:23,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:51:23,996 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:51:23,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23 WrapperNode [2020-09-24 23:51:23,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:51:23,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:51:23,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:51:23,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:51:24,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,106 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,107 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,115 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,116 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (1/1) ... [2020-09-24 23:51:24,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:51:24,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:51:24,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:51:24,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:51:24,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (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 [2020-09-24 23:51:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:51:24,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:51:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-09-24 23:51:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:51:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:51:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:51:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-09-24 23:51:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:51:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:51:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:51:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:51:24,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:51:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:51:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:51:24,433 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:51:24,433 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:51:24,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:24 BoogieIcfgContainer [2020-09-24 23:51:24,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:51:24,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:51:24,442 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:51:24,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:51:24,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:51:23" (1/3) ... [2020-09-24 23:51:24,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13971bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:24, skipping insertion in model container [2020-09-24 23:51:24,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:51:23" (2/3) ... [2020-09-24 23:51:24,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13971bc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:51:24, skipping insertion in model container [2020-09-24 23:51:24,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:51:24" (3/3) ... [2020-09-24 23:51:24,452 INFO L109 eAbstractionObserver]: Analyzing ICFG test15.c [2020-09-24 23:51:24,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:51:24,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:51:24,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:51:24,534 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:51:24,535 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:51:24,535 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:51:24,535 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:51:24,535 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:51:24,535 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:51:24,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:51:24,536 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:51:24,562 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-24 23:51:24,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-24 23:51:24,571 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:51:24,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:51:24,573 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:51:24,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:51:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1875144090, now seen corresponding path program 1 times [2020-09-24 23:51:24,591 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:51:24,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763450040] [2020-09-24 23:51:24,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:51:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:25,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-24 23:51:25,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:25,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-09-24 23:51:25,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:51:25,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:51:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:51:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:51:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:51:25,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:25,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:25,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:51:25,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:51:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:51:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:25,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:51:25,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:51:25,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 23:51:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:51:25,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:51:25,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:51:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:51:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:51:25,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 23:51:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:51:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:51:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:51:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:51:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:51:25,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:51:25,702 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763450040] [2020-09-24 23:51:25,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:51:25,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-24 23:51:25,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555707068] [2020-09-24 23:51:25,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 23:51:25,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:51:25,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 23:51:25,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 23:51:25,731 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 11 states. [2020-09-24 23:51:26,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:51:26,378 INFO L93 Difference]: Finished difference Result 47 states and 46 transitions. [2020-09-24 23:51:26,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 23:51:26,381 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-09-24 23:51:26,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:51:26,394 INFO L225 Difference]: With dead ends: 47 [2020-09-24 23:51:26,394 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 23:51:26,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2020-09-24 23:51:26,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 23:51:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 23:51:26,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 23:51:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 23:51:26,435 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-24 23:51:26,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:51:26,436 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 23:51:26,436 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 23:51:26,436 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 23:51:26,436 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 23:51:26,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:51:26,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 23:51:26,531 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-24 23:51:26,532 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-24 23:51:26,532 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:51:26,532 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-24 23:51:26,532 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:51:26,533 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 23:51:26,533 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 23:51:26,533 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 23:51:26,533 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 23:51:26,533 INFO L268 CegarLoopResult]: For program point L10-9(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,534 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 21) no Hoare annotation was computed. [2020-09-24 23:51:26,534 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-24 23:51:26,534 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 23:51:26,534 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 21) no Hoare annotation was computed. [2020-09-24 23:51:26,534 INFO L268 CegarLoopResult]: For program point L13-1(lines 13 15) no Hoare annotation was computed. [2020-09-24 23:51:26,535 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-24 23:51:26,535 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 23:51:26,535 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-24 23:51:26,535 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-24 23:51:26,535 INFO L268 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-09-24 23:51:26,535 INFO L268 CegarLoopResult]: For program point L13-5(line 13) no Hoare annotation was computed. [2020-09-24 23:51:26,536 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-09-24 23:51:26,536 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 9 21) the Hoare annotation is: (and (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|)) [2020-09-24 23:51:26,536 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-24 23:51:26,536 INFO L264 CegarLoopResult]: At program point L14(lines 9 21) the Hoare annotation is: false [2020-09-24 23:51:26,537 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-09-24 23:51:26,537 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 23:51:26,537 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,537 INFO L268 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,537 INFO L268 CegarLoopResult]: For program point L10-2(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,537 INFO L268 CegarLoopResult]: For program point L10-3(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,538 INFO L268 CegarLoopResult]: For program point L10-4(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,538 INFO L268 CegarLoopResult]: For program point L10-5(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,538 INFO L268 CegarLoopResult]: For program point L10-6(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,538 INFO L268 CegarLoopResult]: For program point L10-7(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,538 INFO L268 CegarLoopResult]: For program point L10-8(line 10) no Hoare annotation was computed. [2020-09-24 23:51:26,539 INFO L268 CegarLoopResult]: For program point assignEXIT(lines 5 7) no Hoare annotation was computed. [2020-09-24 23:51:26,539 INFO L264 CegarLoopResult]: At program point assignENTRY(lines 5 7) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-09-24 23:51:26,539 INFO L268 CegarLoopResult]: For program point assignFINAL(lines 5 7) no Hoare annotation was computed. [2020-09-24 23:51:26,539 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 23:51:26,539 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-24 23:51:26,539 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 23:51:26,540 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-24 23:51:26,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:51:26 BoogieIcfgContainer [2020-09-24 23:51:26,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:51:26,556 INFO L168 Benchmark]: Toolchain (without parser) took 2860.45 ms. Allocated memory was 147.3 MB in the beginning and 234.4 MB in the end (delta: 87.0 MB). Free memory was 103.4 MB in the beginning and 125.7 MB in the end (delta: -22.3 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:26,557 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:51:26,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.24 ms. Allocated memory is still 147.3 MB. Free memory was 102.8 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:26,559 INFO L168 Benchmark]: Boogie Preprocessor took 120.28 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 182.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:26,560 INFO L168 Benchmark]: RCFGBuilder took 322.89 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 166.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:26,561 INFO L168 Benchmark]: TraceAbstraction took 2111.00 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 166.2 MB in the beginning and 125.7 MB in the end (delta: 40.5 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:51:26,565 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 293.24 ms. Allocated memory is still 147.3 MB. Free memory was 102.8 MB in the beginning and 93.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.28 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 182.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 322.89 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 166.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2111.00 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 166.2 MB in the beginning and 125.7 MB in the end (delta: 40.5 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 32 SDslu, 103 SDs, 0 SdLazy, 151 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 24 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 4275 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...