/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=WIDEST --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/test06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:14:19,444 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:14:19,448 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:14:19,496 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:14:19,496 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:14:19,497 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:14:19,499 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:14:19,501 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:14:19,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:14:19,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:14:19,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:14:19,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:14:19,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:14:19,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:14:19,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:14:19,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:14:19,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:14:19,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:14:19,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:14:19,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:14:19,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:14:19,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:14:19,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:14:19,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:14:19,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:14:19,541 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:14:19,541 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:14:19,542 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:14:19,542 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:14:19,547 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:14:19,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:14:19,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:14:19,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:14:19,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:14:19,553 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:14:19,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:14:19,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:14:19,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:14:19,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:14:19,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:14:19,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:14:19,558 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 03:14:19,598 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:14:19,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:14:19,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:14:19,600 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:14:19,601 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:14:19,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:14:19,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:14:19,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:14:19,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:14:19,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:14:19,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:14:19,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:14:19,602 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:14:19,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:14:19,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:14:19,603 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:14:19,603 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:14:19,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:14:19,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:14:19,604 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:14:19,604 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:14:19,604 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:14:19,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:14:19,605 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:14:19,605 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:14:19,605 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:14:19,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:14:19,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:14:19,606 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:14:19,606 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:14:20,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:14:20,051 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:14:20,057 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:14:20,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:14:20,060 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:14:20,061 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test06.c [2020-09-25 03:14:20,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1247fc424/7b5164551a6e452880d7c8d36e1aa5e0/FLAG1d61542d4 [2020-09-25 03:14:20,700 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:14:20,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test06.c [2020-09-25 03:14:20,708 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1247fc424/7b5164551a6e452880d7c8d36e1aa5e0/FLAG1d61542d4 [2020-09-25 03:14:21,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1247fc424/7b5164551a6e452880d7c8d36e1aa5e0 [2020-09-25 03:14:21,058 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:14:21,064 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:14:21,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:14:21,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:14:21,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:14:21,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3b431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21, skipping insertion in model container [2020-09-25 03:14:21,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:14:21,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:14:21,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:14:21,390 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:14:21,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:14:21,429 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:14:21,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21 WrapperNode [2020-09-25 03:14:21,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:14:21,431 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:14:21,431 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:14:21,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:14:21,525 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,544 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (1/1) ... [2020-09-25 03:14:21,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:14:21,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:14:21,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:14:21,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:14:21,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (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 03:14:21,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:14:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:14:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2020-09-25 03:14:21,644 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2020-09-25 03:14:21,645 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:14:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:14:21,645 INFO L130 BoogieDeclarations]: Found specification of procedure g [2020-09-25 03:14:21,646 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure f [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 03:14:21,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 03:14:21,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:14:21,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:14:22,072 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:14:22,072 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:14:22,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:14:22 BoogieIcfgContainer [2020-09-25 03:14:22,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:14:22,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:14:22,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:14:22,084 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:14:22,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:14:21" (1/3) ... [2020-09-25 03:14:22,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b84c8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:14:22, skipping insertion in model container [2020-09-25 03:14:22,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:14:21" (2/3) ... [2020-09-25 03:14:22,086 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b84c8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:14:22, skipping insertion in model container [2020-09-25 03:14:22,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:14:22" (3/3) ... [2020-09-25 03:14:22,089 INFO L109 eAbstractionObserver]: Analyzing ICFG test06.c [2020-09-25 03:14:22,100 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:14:22,111 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:14:22,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:14:22,165 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:14:22,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:14:22,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:14:22,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:14:22,166 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:14:22,166 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:14:22,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:14:22,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:14:22,189 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-09-25 03:14:22,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-25 03:14:22,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:22,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:14:22,200 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:22,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:22,207 INFO L82 PathProgramCache]: Analyzing trace with hash -1600319067, now seen corresponding path program 1 times [2020-09-25 03:14:22,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:22,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846890848] [2020-09-25 03:14:22,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:22,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:22,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:23,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:14:23,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-09-25 03:14:23,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:14:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 03:14:23,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 03:14:23,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:14:23,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:14:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:23,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:23,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:23,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:14:23,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:23,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:14:23,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:14:23,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:14:23,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:14:23,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:14:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 03:14:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:14:23,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:14:23,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:14:23,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 03:14:23,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:14:23,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-09-25 03:14:23,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:14:23,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:14:23,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:14:23,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:14:23,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:14:23,645 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 03:14:23,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846890848] [2020-09-25 03:14:23,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:14:23,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 03:14:23,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414944314] [2020-09-25 03:14:23,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:14:23,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:14:23,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:14:23,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:14:23,680 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 11 states. [2020-09-25 03:14:24,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:14:24,276 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-09-25 03:14:24,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:14:24,278 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-09-25 03:14:24,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:14:24,293 INFO L225 Difference]: With dead ends: 105 [2020-09-25 03:14:24,293 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 03:14:24,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-09-25 03:14:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 03:14:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-09-25 03:14:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:14:24,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 51 transitions. [2020-09-25 03:14:24,360 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 51 transitions. Word has length 39 [2020-09-25 03:14:24,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:14:24,361 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 51 transitions. [2020-09-25 03:14:24,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:14:24,361 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 51 transitions. [2020-09-25 03:14:24,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:14:24,363 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:14:24,364 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, 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] [2020-09-25 03:14:24,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:14:24,364 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:14:24,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:14:24,365 INFO L82 PathProgramCache]: Analyzing trace with hash 2059010026, now seen corresponding path program 1 times [2020-09-25 03:14:24,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:14:24,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159966041] [2020-09-25 03:14:24,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:14:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 03:14:24,420 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 03:14:24,421 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 03:14:24,427 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:14:24,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:14:24 BoogieIcfgContainer [2020-09-25 03:14:24,452 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:14:24,456 INFO L168 Benchmark]: Toolchain (without parser) took 3394.33 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 102.0 MB in the beginning and 115.9 MB in the end (delta: -14.0 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:24,457 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:14:24,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.08 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:24,459 INFO L168 Benchmark]: Boogie Preprocessor took 133.77 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 180.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:24,460 INFO L168 Benchmark]: RCFGBuilder took 513.87 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 157.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:24,461 INFO L168 Benchmark]: TraceAbstraction took 2371.97 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 156.7 MB in the beginning and 115.9 MB in the end (delta: 40.8 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. [2020-09-25 03:14:24,465 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 365.08 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.77 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 91.5 MB in the beginning and 180.4 MB in the end (delta: -88.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 513.87 ms. Allocated memory is still 202.4 MB. Free memory was 180.4 MB in the beginning and 157.4 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2371.97 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 156.7 MB in the beginning and 115.9 MB in the end (delta: 40.8 MB). Peak memory consumption was 73.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 40]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L21] int a, b; [L22] int *p1, *p2; [L24] p1 = &a [L25] p2 = &b [L27] b = 1 [L28] a = 5 [L30] EXPR \read(a) [L30] a-- [L32] EXPR \read(a) [L32] CALL, EXPR f(a, &p1, &p2) [L12] COND TRUE a == 4 [L13] CALL g(p1, p2) [L5] EXPR \read(**p2) [L5] int *pq = *p2; [L7] EXPR \read(**p2) [L7] *p1 = *p2 [L8] *pq = 0 [L13] RET g(p1, p2) [L14] return 1; [L32] RET, EXPR f(a, &p1, &p2) [L32] a = f(a, &p1, &p2) [L34] EXPR \read(*p1) [L34] COND TRUE *p1 == 0 [L40] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 52 SDslu, 262 SDs, 0 SdLazy, 287 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 5244 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 incorrect! Received shutdown request...