/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=0.2 --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/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:24:17,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:24:17,453 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:24:17,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:24:17,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:24:17,482 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:24:17,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:24:17,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:24:17,488 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:24:17,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:24:17,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:24:17,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:24:17,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:24:17,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:24:17,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:24:17,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:24:17,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:24:17,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:24:17,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:24:17,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:24:17,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:24:17,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:24:17,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:24:17,512 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:24:17,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:24:17,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:24:17,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:24:17,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:24:17,519 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:24:17,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:24:17,523 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:24:17,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:24:17,525 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:24:17,526 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:24:17,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:24:17,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:24:17,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:24:17,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:24:17,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:24:17,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:24:17,534 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:24:17,535 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 11:24:17,583 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:24:17,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:24:17,586 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:24:17,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:24:17,586 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:24:17,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:24:17,587 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:24:17,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:24:17,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:24:17,588 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:24:17,589 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:24:17,589 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:24:17,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:24:17,590 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:24:17,590 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:24:17,590 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:24:17,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:24:17,591 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:24:17,591 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:24:17,591 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:24:17,591 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:24:17,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:24:17,592 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:24:17,592 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:24:17,592 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:24:17,592 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:24:17,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:24:17,593 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:24:17,593 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:24:17,593 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 11:24:18,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:24:18,059 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:24:18,064 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:24:18,066 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:24:18,066 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:24:18,067 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-09-25 11:24:18,145 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa3f5946/c1a197916ba7421b84f74e8476e84f93/FLAGf20753929 [2020-09-25 11:24:18,692 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:24:18,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2020-09-25 11:24:18,701 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa3f5946/c1a197916ba7421b84f74e8476e84f93/FLAGf20753929 [2020-09-25 11:24:19,035 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/efa3f5946/c1a197916ba7421b84f74e8476e84f93 [2020-09-25 11:24:19,051 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:24:19,058 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:24:19,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:19,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:24:19,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:24:19,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4df7be5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19, skipping insertion in model container [2020-09-25 11:24:19,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:24:19,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:24:19,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:19,309 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:24:19,336 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:24:19,352 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:24:19,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19 WrapperNode [2020-09-25 11:24:19,353 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:24:19,354 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:24:19,354 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:24:19,354 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:24:19,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,367 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,373 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,374 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (1/1) ... [2020-09-25 11:24:19,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:24:19,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:24:19,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:24:19,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:24:19,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (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 11:24:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:24:19,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:24:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 11:24:19,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:24:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:24:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 11:24:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:24:19,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:24:19,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:24:19,717 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:24:19,717 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:24:19,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:19 BoogieIcfgContainer [2020-09-25 11:24:19,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:24:19,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:24:19,723 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:24:19,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:24:19,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:24:19" (1/3) ... [2020-09-25 11:24:19,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b980796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:19, skipping insertion in model container [2020-09-25 11:24:19,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:24:19" (2/3) ... [2020-09-25 11:24:19,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b980796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:24:19, skipping insertion in model container [2020-09-25 11:24:19,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:24:19" (3/3) ... [2020-09-25 11:24:19,731 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2020-09-25 11:24:19,740 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:24:19,750 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:24:19,772 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:24:19,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:24:19,799 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:24:19,799 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:24:19,799 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:24:19,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:24:19,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:24:19,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:24:19,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:24:19,818 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 11:24:19,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 11:24:19,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:19,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:19,825 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:19,832 INFO L82 PathProgramCache]: Analyzing trace with hash 493765703, now seen corresponding path program 1 times [2020-09-25 11:24:19,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:19,842 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958723508] [2020-09-25 11:24:19,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:19,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:20,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:20,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:24:20,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:20,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 11:24:20,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:20,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:24:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:24:20,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:20,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:20,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:20,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:20,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:20,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:20,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:24:20,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:20,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:20,058 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 11:24:20,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958723508] [2020-09-25 11:24:20,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:20,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 11:24:20,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497818344] [2020-09-25 11:24:20,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 11:24:20,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:20,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 11:24:20,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 11:24:20,086 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2020-09-25 11:24:20,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:20,109 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-09-25 11:24:20,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 11:24:20,111 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-09-25 11:24:20,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:20,119 INFO L225 Difference]: With dead ends: 33 [2020-09-25 11:24:20,119 INFO L226 Difference]: Without dead ends: 16 [2020-09-25 11:24:20,123 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 11:24:20,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-09-25 11:24:20,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-09-25 11:24:20,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-25 11:24:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-09-25 11:24:20,161 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-09-25 11:24:20,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:20,161 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-09-25 11:24:20,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 11:24:20,162 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-09-25 11:24:20,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 11:24:20,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:20,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:20,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:24:20,163 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:20,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:20,164 INFO L82 PathProgramCache]: Analyzing trace with hash 486377535, now seen corresponding path program 1 times [2020-09-25 11:24:20,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:20,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024768665] [2020-09-25 11:24:20,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:20,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:20,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 11:24:20,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:20,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 11:24:20,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:20,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:24:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:24:20,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 11:24:20,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:20,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:20,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:20,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:20,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:24:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:20,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:20,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:20,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:20,319 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 11:24:20,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024768665] [2020-09-25 11:24:20,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:20,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 11:24:20,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274053629] [2020-09-25 11:24:20,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 11:24:20,323 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:20,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 11:24:20,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:24:20,324 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2020-09-25 11:24:20,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:20,347 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-09-25 11:24:20,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 11:24:20,348 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-25 11:24:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:20,349 INFO L225 Difference]: With dead ends: 24 [2020-09-25 11:24:20,349 INFO L226 Difference]: Without dead ends: 19 [2020-09-25 11:24:20,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 11:24:20,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-25 11:24:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-09-25 11:24:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-09-25 11:24:20,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-09-25 11:24:20,356 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-09-25 11:24:20,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:20,357 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-09-25 11:24:20,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 11:24:20,357 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-09-25 11:24:20,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:24:20,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:24:20,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:24:20,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:24:20,359 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:24:20,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:24:20,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1748013841, now seen corresponding path program 1 times [2020-09-25 11:24:20,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:24:20,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [260296730] [2020-09-25 11:24:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:24:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:20,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:20,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:20,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:20,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:24:20,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:24:20,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 11:24:20,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:20,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:24:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:24:20,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:24:20,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:24:21,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:24:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:24:21,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:24:21,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:24:21,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:24:21,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:24:21,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:24:21,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:24:21,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:24:21,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:24:21,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:24:21,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:24:21,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [260296730] [2020-09-25 11:24:21,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:24:21,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 11:24:21,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281527794] [2020-09-25 11:24:21,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:24:21,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:24:21,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:24:21,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:24:21,015 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 8 states. [2020-09-25 11:24:21,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:24:21,100 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-09-25 11:24:21,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:24:21,100 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-09-25 11:24:21,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:24:21,101 INFO L225 Difference]: With dead ends: 17 [2020-09-25 11:24:21,101 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 11:24:21,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:24:21,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 11:24:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 11:24:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 11:24:21,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 11:24:21,103 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-09-25 11:24:21,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:24:21,104 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 11:24:21,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:24:21,104 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 11:24:21,104 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 11:24:21,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:24:21,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 11:24:21,144 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 11:24:21,144 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:24:21,144 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 11:24:21,144 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 11:24:21,145 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 11:24:21,145 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 11:24:21,145 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2020-09-25 11:24:21,145 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2020-09-25 11:24:21,145 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 11:24:21,145 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 11:24:21,146 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-25 11:24:21,146 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-25 11:24:21,146 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2020-09-25 11:24:21,146 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 11:24:21,146 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (<= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 6)) [2020-09-25 11:24:21,146 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (= main_~x~0 (+ (* 4294967296 (div main_~x~0 4294967296)) 6)) [2020-09-25 11:24:21,147 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 11:24:21,147 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 11:24:21,147 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 11:24:21,147 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 11:24:21,147 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 11:24:21,148 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 11:24:21,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 11:24:21 BoogieIcfgContainer [2020-09-25 11:24:21,168 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 11:24:21,172 INFO L168 Benchmark]: Toolchain (without parser) took 2116.96 ms. Allocated memory was 109.6 MB in the beginning and 185.6 MB in the end (delta: 76.0 MB). Free memory was 74.6 MB in the beginning and 137.8 MB in the end (delta: -63.3 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:21,173 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 109.6 MB. Free memory was 91.7 MB in the beginning and 91.6 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. [2020-09-25 11:24:21,174 INFO L168 Benchmark]: CACSL2BoogieTranslator took 294.42 ms. Allocated memory was 109.6 MB in the beginning and 123.2 MB in the end (delta: 13.6 MB). Free memory was 74.0 MB in the beginning and 100.2 MB in the end (delta: -26.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:21,175 INFO L168 Benchmark]: Boogie Preprocessor took 102.00 ms. Allocated memory was 123.2 MB in the beginning and 163.6 MB in the end (delta: 40.4 MB). Free memory was 100.2 MB in the beginning and 150.1 MB in the end (delta: -49.9 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:21,176 INFO L168 Benchmark]: RCFGBuilder took 265.77 ms. Allocated memory is still 163.6 MB. Free memory was 149.7 MB in the beginning and 139.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:21,177 INFO L168 Benchmark]: TraceAbstraction took 1445.22 ms. Allocated memory was 163.6 MB in the beginning and 185.6 MB in the end (delta: 22.0 MB). Free memory was 138.8 MB in the beginning and 137.8 MB in the end (delta: 930.7 kB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 11:24:21,182 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 109.6 MB. Free memory was 91.7 MB in the beginning and 91.6 MB in the end (delta: 105.1 kB). Peak memory consumption was 105.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 294.42 ms. Allocated memory was 109.6 MB in the beginning and 123.2 MB in the end (delta: 13.6 MB). Free memory was 74.0 MB in the beginning and 100.2 MB in the end (delta: -26.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 102.00 ms. Allocated memory was 123.2 MB in the beginning and 163.6 MB in the end (delta: 40.4 MB). Free memory was 100.2 MB in the beginning and 150.1 MB in the end (delta: -49.9 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.77 ms. Allocated memory is still 163.6 MB. Free memory was 149.7 MB in the beginning and 139.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1445.22 ms. Allocated memory was 163.6 MB in the beginning and 185.6 MB in the end (delta: 22.0 MB). Free memory was 138.8 MB in the beginning and 137.8 MB in the end (delta: 930.7 kB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 14]: Loop Invariant Derived loop invariant: x <= 4294967296 * (x / 4294967296) + 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 8 SDslu, 50 SDs, 0 SdLazy, 31 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 23 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 1415 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 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...