/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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-crafted/simple_vardep_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:17:08,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:17:08,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:17:08,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:17:08,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:17:08,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:17:08,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:17:08,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:17:08,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:17:08,663 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:17:08,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:17:08,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:17:08,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:17:08,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:17:08,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:17:08,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:17:08,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:17:08,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:17:08,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:17:08,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:17:08,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:17:08,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:17:08,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:17:08,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:17:08,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:17:08,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:17:08,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:17:08,714 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:17:08,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:17:08,715 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:17:08,715 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:17:08,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:17:08,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:17:08,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:17:08,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:17:08,724 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:17:08,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:17:08,725 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:17:08,725 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:17:08,726 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:17:08,727 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:17:08,728 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 10:17:08,766 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:17:08,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:17:08,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:17:08,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:17:08,768 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:17:08,768 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:17:08,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:17:08,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:17:08,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:17:08,769 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:17:08,769 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:17:08,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:17:08,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:17:08,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:17:08,770 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:17:08,770 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:17:08,770 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:17:08,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:17:08,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:17:08,771 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:17:08,771 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:17:08,771 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:17:08,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:17:08,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:17:08,772 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:17:08,772 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:17:08,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:17:08,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:17:08,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:17:08,773 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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;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=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:17:09,304 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:17:09,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:17:09,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:17:09,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:17:09,344 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:17:09,345 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-09-25 10:17:09,440 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/450b026ee/afbbf780b9f34684a90bff3664d30d65/FLAGba1cf6412 [2020-09-25 10:17:10,019 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:17:10,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-09-25 10:17:10,028 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/450b026ee/afbbf780b9f34684a90bff3664d30d65/FLAGba1cf6412 [2020-09-25 10:17:10,384 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/450b026ee/afbbf780b9f34684a90bff3664d30d65 [2020-09-25 10:17:10,399 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:17:10,405 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:17:10,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:10,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:17:10,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:17:10,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d494263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10, skipping insertion in model container [2020-09-25 10:17:10,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:17:10,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:17:10,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:10,751 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:17:10,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:17:10,787 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:17:10,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10 WrapperNode [2020-09-25 10:17:10,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:17:10,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:17:10,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:17:10,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:17:10,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (1/1) ... [2020-09-25 10:17:10,895 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:17:10,895 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:17:10,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:17:10,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:17:10,896 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (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 10:17:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:17:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:17:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 10:17:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:17:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:17:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 10:17:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:17:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:17:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:17:11,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:17:11,157 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:17:11,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:11 BoogieIcfgContainer [2020-09-25 10:17:11,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:17:11,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:17:11,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:17:11,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:17:11,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:17:10" (1/3) ... [2020-09-25 10:17:11,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a70e2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:11, skipping insertion in model container [2020-09-25 10:17:11,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:17:10" (2/3) ... [2020-09-25 10:17:11,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a70e2cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:17:11, skipping insertion in model container [2020-09-25 10:17:11,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:17:11" (3/3) ... [2020-09-25 10:17:11,170 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2020-09-25 10:17:11,182 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:17:11,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:17:11,214 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:17:11,245 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:17:11,246 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:17:11,246 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:17:11,246 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:17:11,246 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:17:11,246 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:17:11,246 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:17:11,247 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:17:11,269 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 10:17:11,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 10:17:11,277 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:17:11,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:17:11,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:17:11,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:17:11,288 INFO L82 PathProgramCache]: Analyzing trace with hash -420526341, now seen corresponding path program 1 times [2020-09-25 10:17:11,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:17:11,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192940642] [2020-09-25 10:17:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:17:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:11,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:11,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:17:11,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:11,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-25 10:17:11,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:11,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:11,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 10:17:11,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 10:17:11,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 10:17:11,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:17:12,187 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 18 [2020-09-25 10:17:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:17:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:17:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:17:12,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:17:12,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 10:17:12,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:17:12,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 10:17:12,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:17:12,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:17:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:17:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:17:12,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:17:12,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:17:12,301 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 10:17:12,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192940642] [2020-09-25 10:17:12,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:17:12,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 10:17:12,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42194345] [2020-09-25 10:17:12,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 10:17:12,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:17:12,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 10:17:12,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 10:17:12,336 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 10 states. [2020-09-25 10:17:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:17:12,550 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2020-09-25 10:17:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 10:17:12,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-25 10:17:12,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:17:12,561 INFO L225 Difference]: With dead ends: 37 [2020-09-25 10:17:12,561 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 10:17:12,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 10:17:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 10:17:12,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 10:17:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 10:17:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 10:17:12,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-25 10:17:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:17:12,601 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 10:17:12,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 10:17:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 10:17:12,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 10:17:12,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:17:12,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 10:17:12,650 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 10:17:12,650 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:17:12,650 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 10:17:12,650 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 10:17:12,651 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 10:17:12,651 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 10:17:12,651 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 27) the Hoare annotation is: true [2020-09-25 10:17:12,651 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 27) no Hoare annotation was computed. [2020-09-25 10:17:12,651 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= .cse0 main_~k~0) (<= main_~k~0 .cse0))) [2020-09-25 10:17:12,652 INFO L264 CegarLoopResult]: At program point L24-1(lines 19 25) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= .cse0 main_~k~0) (<= main_~k~0 .cse0))) [2020-09-25 10:17:12,652 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 10:17:12,652 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-25 10:17:12,652 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 10:17:12,652 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 10:17:12,653 INFO L268 CegarLoopResult]: For program point L19-2(lines 13 27) no Hoare annotation was computed. [2020-09-25 10:17:12,653 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 10:17:12,653 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 11) the Hoare annotation is: true [2020-09-25 10:17:12,653 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 11) no Hoare annotation was computed. [2020-09-25 10:17:12,653 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 10:17:12,654 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 10:17:12,654 INFO L268 CegarLoopResult]: For program point L7-2(lines 5 11) no Hoare annotation was computed. [2020-09-25 10:17:12,654 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 10:17:12,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 10:17:12 BoogieIcfgContainer [2020-09-25 10:17:12,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 10:17:12,678 INFO L168 Benchmark]: Toolchain (without parser) took 2276.91 ms. Allocated memory was 109.6 MB in the beginning and 185.1 MB in the end (delta: 75.5 MB). Free memory was 74.0 MB in the beginning and 148.2 MB in the end (delta: -74.3 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:12,679 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 109.6 MB. Free memory was 91.6 MB in the beginning and 91.5 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. [2020-09-25 10:17:12,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.70 ms. Allocated memory was 109.6 MB in the beginning and 123.2 MB in the end (delta: 13.6 MB). Free memory was 73.4 MB in the beginning and 99.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:12,682 INFO L168 Benchmark]: Boogie Preprocessor took 106.24 ms. Allocated memory was 123.2 MB in the beginning and 164.1 MB in the end (delta: 40.9 MB). Free memory was 99.8 MB in the beginning and 150.1 MB in the end (delta: -50.3 MB). Peak memory consumption was 725.5 kB. Max. memory is 7.1 GB. [2020-09-25 10:17:12,683 INFO L168 Benchmark]: RCFGBuilder took 266.21 ms. Allocated memory is still 164.1 MB. Free memory was 150.1 MB in the beginning and 139.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:12,684 INFO L168 Benchmark]: TraceAbstraction took 1513.49 ms. Allocated memory was 164.1 MB in the beginning and 185.1 MB in the end (delta: 21.0 MB). Free memory was 138.7 MB in the beginning and 148.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-25 10:17:12,689 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 109.6 MB. Free memory was 91.6 MB in the beginning and 91.5 MB in the end (delta: 104.9 kB). Peak memory consumption was 104.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.70 ms. Allocated memory was 109.6 MB in the beginning and 123.2 MB in the end (delta: 13.6 MB). Free memory was 73.4 MB in the beginning and 99.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.24 ms. Allocated memory was 123.2 MB in the beginning and 164.1 MB in the end (delta: 40.9 MB). Free memory was 99.8 MB in the beginning and 150.1 MB in the end (delta: -50.3 MB). Peak memory consumption was 725.5 kB. Max. memory is 7.1 GB. * RCFGBuilder took 266.21 ms. Allocated memory is still 164.1 MB. Free memory was 150.1 MB in the beginning and 139.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1513.49 ms. Allocated memory was 164.1 MB in the beginning and 185.1 MB in the end (delta: 21.0 MB). Free memory was 138.7 MB in the beginning and 148.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: i + j <= k && k <= i + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 16 SDslu, 65 SDs, 0 SdLazy, 63 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 27 HoareAnnotationTreeSize, 8 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 1736 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...