/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:01:41,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:01:41,642 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:01:41,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:01:41,669 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:01:41,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:01:41,672 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:01:41,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:01:41,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:01:41,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:01:41,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:01:41,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:01:41,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:01:41,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:01:41,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:01:41,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:01:41,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:01:41,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:01:41,687 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:01:41,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:01:41,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:01:41,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:01:41,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:01:41,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:01:41,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:01:41,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:01:41,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:01:41,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:01:41,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:01:41,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:01:41,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:01:41,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:01:41,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:01:41,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:01:41,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:01:41,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:01:41,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:01:41,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:01:41,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:01:41,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:01:41,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:01:41,716 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 08:01:41,775 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:01:41,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:01:41,779 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:01:41,779 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:01:41,779 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:01:41,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:01:41,780 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:01:41,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:01:41,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:01:41,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:01:41,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:01:41,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:01:41,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:01:41,783 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:01:41,783 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:01:41,784 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:01:41,784 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:01:41,784 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:01:41,784 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:01:41,785 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:01:41,786 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:01:41,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:01:41,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:01:41,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:01:41,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:01:41,791 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:01:41,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:01:41,792 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:01:41,792 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:01:41,792 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 08:01:42,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:01:42,260 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:01:42,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:01:42,269 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:01:42,270 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:01:42,271 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-09-25 08:01:42,344 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19860c136/cabc09828e5c4c859736c14f4dad5496/FLAG185aade6d [2020-09-25 08:01:42,841 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:01:42,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/simple_2-2.c [2020-09-25 08:01:42,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19860c136/cabc09828e5c4c859736c14f4dad5496/FLAG185aade6d [2020-09-25 08:01:43,179 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19860c136/cabc09828e5c4c859736c14f4dad5496 [2020-09-25 08:01:43,195 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:01:43,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:01:43,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:01:43,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:01:43,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:01:43,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c77fbdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43, skipping insertion in model container [2020-09-25 08:01:43,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:01:43,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:01:43,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:01:43,479 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:01:43,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:01:43,517 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:01:43,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43 WrapperNode [2020-09-25 08:01:43,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:01:43,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:01:43,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:01:43,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:01:43,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,544 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (1/1) ... [2020-09-25 08:01:43,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:01:43,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:01:43,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:01:43,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:01:43,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (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 08:01:43,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:01:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:01:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 08:01:43,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:01:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:01:43,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 08:01:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 08:01:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:01:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:01:43,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:01:43,931 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:01:43,932 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 08:01:43,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:01:43 BoogieIcfgContainer [2020-09-25 08:01:43,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:01:43,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:01:43,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:01:43,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:01:43,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:01:43" (1/3) ... [2020-09-25 08:01:43,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:01:43, skipping insertion in model container [2020-09-25 08:01:43,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:01:43" (2/3) ... [2020-09-25 08:01:43,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f07bba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:01:43, skipping insertion in model container [2020-09-25 08:01:43,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:01:43" (3/3) ... [2020-09-25 08:01:43,945 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_2-2.c [2020-09-25 08:01:43,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:01:43,967 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:01:43,987 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:01:44,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:01:44,017 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:01:44,017 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:01:44,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:01:44,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:01:44,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:01:44,017 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:01:44,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:01:44,037 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-25 08:01:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 08:01:44,044 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:44,045 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:44,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1940560411, now seen corresponding path program 1 times [2020-09-25 08:01:44,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:44,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616520376] [2020-09-25 08:01:44,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:44,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:44,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:44,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 08:01:44,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:44,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 08:01:44,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:44,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:44,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 08:01:44,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:44,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 08:01:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:01:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:01:44,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:01:44,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:01:44,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:01:44,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:01:44,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 08:01:44,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:01:44,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 08:01:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:01:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:01:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:01:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:01:44,240 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 08:01:44,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616520376] [2020-09-25 08:01:44,244 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:01:44,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 08:01:44,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217441642] [2020-09-25 08:01:44,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 08:01:44,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:01:44,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 08:01:44,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 08:01:44,275 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-09-25 08:01:44,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:01:44,307 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2020-09-25 08:01:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 08:01:44,309 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-09-25 08:01:44,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:01:44,320 INFO L225 Difference]: With dead ends: 32 [2020-09-25 08:01:44,321 INFO L226 Difference]: Without dead ends: 15 [2020-09-25 08:01:44,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 08:01:44,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-09-25 08:01:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-09-25 08:01:44,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-09-25 08:01:44,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-09-25 08:01:44,374 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-09-25 08:01:44,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:01:44,375 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-09-25 08:01:44,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 08:01:44,375 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-09-25 08:01:44,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 08:01:44,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:01:44,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:01:44,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:01:44,377 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:01:44,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:01:44,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1947025058, now seen corresponding path program 1 times [2020-09-25 08:01:44,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:01:44,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2033848654] [2020-09-25 08:01:44,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:01:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 08:01:44,418 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 08:01:44,419 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 08:01:44,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:01:44,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 08:01:44 BoogieIcfgContainer [2020-09-25 08:01:44,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 08:01:44,447 INFO L168 Benchmark]: Toolchain (without parser) took 1250.00 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 145.2 MB in the end (delta: -43.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:44,448 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 08:01:44,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.59 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:44,451 INFO L168 Benchmark]: Boogie Preprocessor took 119.55 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 182.4 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:44,452 INFO L168 Benchmark]: RCFGBuilder took 297.57 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 170.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:44,453 INFO L168 Benchmark]: TraceAbstraction took 506.75 ms. Allocated memory is still 202.4 MB. Free memory was 169.5 MB in the beginning and 145.2 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-09-25 08:01:44,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 316.59 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.55 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 92.3 MB in the beginning and 182.4 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 297.57 ms. Allocated memory is still 202.4 MB. Free memory was 181.4 MB in the beginning and 170.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 506.75 ms. Allocated memory is still 202.4 MB. Free memory was 169.5 MB in the beginning and 145.2 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = __VERIFIER_nondet_uint(); [L14] COND FALSE !(x < 0x0fffffff) [L18] CALL __VERIFIER_assert(x > 0x0fffffff) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 0.0s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...