/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:42:01,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:42:01,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:42:01,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:42:01,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:42:01,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:42:01,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:42:01,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:42:01,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:42:01,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:42:01,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:42:01,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:42:01,799 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:42:01,800 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:42:01,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:42:01,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:42:01,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:42:01,805 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:42:01,808 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:42:01,810 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:42:01,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:42:01,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:42:01,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:42:01,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:42:01,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:42:01,819 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:42:01,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:42:01,820 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:42:01,821 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:42:01,822 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:42:01,822 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:42:01,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:42:01,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:42:01,825 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:42:01,826 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:42:01,827 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:42:01,827 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:42:01,828 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:42:01,828 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:42:01,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:42:01,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:42:01,831 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 20:42:01,859 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:42:01,859 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:42:01,861 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:42:01,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:42:01,861 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:42:01,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:42:01,861 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:42:01,862 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:42:01,862 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:42:01,862 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:42:01,862 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:42:01,862 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:42:01,863 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:42:01,863 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:42:01,863 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:42:01,863 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:42:01,863 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:42:01,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:42:01,864 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:42:01,864 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:42:01,864 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:42:01,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:42:01,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:42:01,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:42:01,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:42:01,865 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:42:01,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:42:01,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:42:01,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:42:01,866 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:42:02,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:42:02,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:42:02,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:42:02,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:42:02,369 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:42:02,370 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-09-24 20:42:02,444 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e201d9b79/f21e7186355144c88238974e3442a8f8/FLAGd0f6732a3 [2020-09-24 20:42:02,939 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:42:02,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/terminator_01.c [2020-09-24 20:42:02,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e201d9b79/f21e7186355144c88238974e3442a8f8/FLAGd0f6732a3 [2020-09-24 20:42:03,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e201d9b79/f21e7186355144c88238974e3442a8f8 [2020-09-24 20:42:03,288 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:42:03,294 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:42:03,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:03,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:42:03,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:42:03,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03, skipping insertion in model container [2020-09-24 20:42:03,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:42:03,343 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:42:03,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:03,652 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:42:03,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:42:03,695 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:42:03,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03 WrapperNode [2020-09-24 20:42:03,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:42:03,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:42:03,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:42:03,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:42:03,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (1/1) ... [2020-09-24 20:42:03,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:42:03,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:42:03,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:42:03,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:42:03,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (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 20:42:03,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:42:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:42:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:42:03,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:42:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:42:03,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:42:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:42:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:42:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 20:42:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 20:42:03,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 20:42:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 20:42:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 20:42:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:42:03,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:42:04,165 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:42:04,165 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:42:04,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:04 BoogieIcfgContainer [2020-09-24 20:42:04,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:42:04,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:42:04,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:42:04,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:42:04,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:42:03" (1/3) ... [2020-09-24 20:42:04,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740f7512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:04, skipping insertion in model container [2020-09-24 20:42:04,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:42:03" (2/3) ... [2020-09-24 20:42:04,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@740f7512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:42:04, skipping insertion in model container [2020-09-24 20:42:04,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:42:04" (3/3) ... [2020-09-24 20:42:04,190 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-09-24 20:42:04,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:42:04,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:42:04,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:42:04,292 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:42:04,293 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:42:04,293 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:42:04,293 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:42:04,293 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:42:04,293 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:42:04,294 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:42:04,294 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:42:04,321 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-24 20:42:04,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:42:04,329 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:04,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:04,331 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:04,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:04,341 INFO L82 PathProgramCache]: Analyzing trace with hash 2009717658, now seen corresponding path program 1 times [2020-09-24 20:42:04,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:04,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774861123] [2020-09-24 20:42:04,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:04,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:04,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:42:04,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 20:42:04,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:42:04,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:04,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:42:04,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:42:04,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:42:04,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:42:04,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:42:04,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:42:04,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:42:04,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 20:42:04,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:42:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:42:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:42:04,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:42:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:42:04,700 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 20:42:04,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774861123] [2020-09-24 20:42:04,703 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:42:04,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:42:04,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661040517] [2020-09-24 20:42:04,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:42:04,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:42:04,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:42:04,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:42:04,730 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-09-24 20:42:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:42:04,858 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-09-24 20:42:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:42:04,860 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-24 20:42:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:42:04,872 INFO L225 Difference]: With dead ends: 49 [2020-09-24 20:42:04,872 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 20:42:04,884 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:42:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 20:42:04,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 20:42:04,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 20:42:04,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-09-24 20:42:04,943 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2020-09-24 20:42:04,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:42:04,944 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-09-24 20:42:04,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:42:04,945 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-09-24 20:42:04,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-24 20:42:04,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:42:04,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:42:04,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:42:04,947 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:42:04,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:42:04,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1896871379, now seen corresponding path program 1 times [2020-09-24 20:42:04,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:42:04,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [219323174] [2020-09-24 20:42:04,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:42:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:42:05,009 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:42:05,010 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:42:05,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:42:05,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:42:05 BoogieIcfgContainer [2020-09-24 20:42:05,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:42:05,047 INFO L168 Benchmark]: Toolchain (without parser) took 1756.47 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 129.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:05,048 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 20:42:05,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 400.87 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 91.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:05,052 INFO L168 Benchmark]: Boogie Preprocessor took 133.60 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:05,055 INFO L168 Benchmark]: RCFGBuilder took 340.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:05,056 INFO L168 Benchmark]: TraceAbstraction took 871.11 ms. Allocated memory is still 201.9 MB. Free memory was 164.6 MB in the beginning and 129.4 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:42:05,061 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 400.87 ms. Allocated memory is still 138.4 MB. Free memory was 101.5 MB in the beginning and 91.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.60 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.8 MB in the beginning and 179.8 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 340.90 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 165.3 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 871.11 ms. Allocated memory is still 201.9 MB. Free memory was 164.6 MB in the beginning and 129.4 MB in the end (delta: 35.2 MB). Peak memory consumption was 35.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] int x=__VERIFIER_nondet_int(); [L13] int x=__VERIFIER_nondet_int(); [L14] int *p = &x; [L16] EXPR \read(x) [L16] COND FALSE !(x<100) [L19] CALL __VERIFIER_assert(0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 23 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 400 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...