/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:29:27,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:29:27,326 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:29:27,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:29:27,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:29:27,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:29:27,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:29:27,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:29:27,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:29:27,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:29:27,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:29:27,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:29:27,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:29:27,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:29:27,404 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:29:27,407 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:29:27,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:29:27,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:29:27,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:29:27,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:29:27,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:29:27,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:29:27,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:29:27,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:29:27,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:29:27,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:29:27,428 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:29:27,431 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:29:27,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:29:27,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:29:27,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:29:27,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:29:27,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:29:27,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:29:27,440 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:29:27,440 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:29:27,441 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:29:27,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:29:27,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:29:27,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:29:27,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:29:27,444 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 14:29:27,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:29:27,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:29:27,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:29:27,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:29:27,473 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:29:27,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:29:27,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:29:27,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:29:27,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:29:27,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:29:27,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:29:27,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:29:27,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:29:27,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:29:27,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:29:27,476 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:29:27,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:29:27,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:29:27,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:29:27,477 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:29:27,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:29:27,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:29:27,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:29:27,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:29:27,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:29:27,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:29:27,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:29:27,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:29:27,479 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:29:27,479 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:29:27,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:29:27,945 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:29:27,951 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:29:27,953 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:29:27,954 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:29:27,955 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-25 14:29:28,034 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/800dc8024/8de55fa262ee44d986c397b1ce9b7113/FLAG514ddd4d4 [2020-09-25 14:29:28,568 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:29:28,569 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-09-25 14:29:28,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/800dc8024/8de55fa262ee44d986c397b1ce9b7113/FLAG514ddd4d4 [2020-09-25 14:29:28,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/800dc8024/8de55fa262ee44d986c397b1ce9b7113 [2020-09-25 14:29:28,927 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:29:28,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:29:28,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:28,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:29:28,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:29:28,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:28" (1/1) ... [2020-09-25 14:29:28,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c364e78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:28, skipping insertion in model container [2020-09-25 14:29:28,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:28" (1/1) ... [2020-09-25 14:29:28,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:29:28,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:29:29,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:29,177 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:29:29,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:29,215 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:29:29,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29 WrapperNode [2020-09-25 14:29:29,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:29,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:29:29,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:29:29,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:29:29,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (1/1) ... [2020-09-25 14:29:29,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:29:29,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:29:29,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:29:29,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:29:29,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (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 14:29:29,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:29:29,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:29:29,399 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 14:29:29,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:29:29,399 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:29:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:29:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 14:29:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:29:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:29:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:29:29,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:29:29,610 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:29:29,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:29 BoogieIcfgContainer [2020-09-25 14:29:29,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:29:29,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:29:29,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:29:29,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:29:29,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:29:28" (1/3) ... [2020-09-25 14:29:29,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457af84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:29, skipping insertion in model container [2020-09-25 14:29:29,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:29" (2/3) ... [2020-09-25 14:29:29,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@457af84a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:29, skipping insertion in model container [2020-09-25 14:29:29,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:29" (3/3) ... [2020-09-25 14:29:29,626 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-09-25 14:29:29,639 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:29:29,649 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:29:29,676 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:29:29,713 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:29:29,713 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:29:29,713 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:29:29,713 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:29:29,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:29:29,714 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:29:29,714 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:29:29,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:29:29,744 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 14:29:29,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 14:29:29,756 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:29,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:29,758 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:29,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:29,766 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-09-25 14:29:29,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:29,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289821029] [2020-09-25 14:29:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:29,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:29:30,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 14:29:30,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 14:29:30,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:30,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:29:30,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:30,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:30,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:30,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:30,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 14:29:30,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:29:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:29:30,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,229 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 14:29:30,230 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289821029] [2020-09-25 14:29:30,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:30,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:30,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903915969] [2020-09-25 14:29:30,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:30,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:30,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:30,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:30,263 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-25 14:29:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:30,378 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-25 14:29:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:29:30,381 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 14:29:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:30,400 INFO L225 Difference]: With dead ends: 45 [2020-09-25 14:29:30,400 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 14:29:30,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:30,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 14:29:30,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 14:29:30,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 14:29:30,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 14:29:30,459 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-25 14:29:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:30,460 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 14:29:30,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:29:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 14:29:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 14:29:30,463 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:30,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:30,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:29:30,464 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:30,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-09-25 14:29:30,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:30,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070733998] [2020-09-25 14:29:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 14:29:30,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 14:29:30,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:30,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 14:29:30,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:29:30,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:30,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:30,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:30,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:29:30,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:29:30,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:29:30,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:29:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:30,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:30,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:29:30,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:30,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:29:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:30,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:29:30,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:30,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 14:29:30,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070733998] [2020-09-25 14:29:30,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:30,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:30,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386814859] [2020-09-25 14:29:30,886 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:30,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:30,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:30,887 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 7 states. [2020-09-25 14:29:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:30,958 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-25 14:29:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 14:29:30,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-25 14:29:30,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:30,960 INFO L225 Difference]: With dead ends: 37 [2020-09-25 14:29:30,961 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 14:29:30,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:30,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 14:29:30,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 14:29:30,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 14:29:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-25 14:29:30,970 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-09-25 14:29:30,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:30,971 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-25 14:29:30,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:30,971 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-25 14:29:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:29:30,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:30,973 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:30,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:29:30,973 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-09-25 14:29:30,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:30,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096559485] [2020-09-25 14:29:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:29:31,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:31,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-09-25 14:29:31,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 14:29:31,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:29:31,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:31,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:31,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:31,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:31,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:31,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:31,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 14:29:31,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:29:31,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:31,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-09-25 14:29:31,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:29:31,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:31,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:29:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:29:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 14:29:31,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:29:31,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:29:31,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:29:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:31,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:31,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:31,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:29:31,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:31,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 14:29:31,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:29:31,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 14:29:31,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096559485] [2020-09-25 14:29:31,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:31,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:29:31,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890452970] [2020-09-25 14:29:31,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:29:31,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:31,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:29:31,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:31,652 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 9 states. [2020-09-25 14:29:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:31,758 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-25 14:29:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:29:31,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-25 14:29:31,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:31,760 INFO L225 Difference]: With dead ends: 31 [2020-09-25 14:29:31,760 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:29:31,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:29:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:29:31,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:29:31,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:29:31,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:29:31,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-09-25 14:29:31,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:31,763 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:29:31,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:29:31,763 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:29:31,763 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:29:31,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:29:31,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:29:31,812 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:29:31,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:29:31,813 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2020-09-25 14:29:31,813 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2020-09-25 14:29:31,813 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2020-09-25 14:29:31,813 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-09-25 14:29:31,813 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 14:29:31,814 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 14:29:31,814 INFO L268 CegarLoopResult]: For program point L22-2(line 22) no Hoare annotation was computed. [2020-09-25 14:29:31,814 INFO L268 CegarLoopResult]: For program point L19(lines 19 21) no Hoare annotation was computed. [2020-09-25 14:29:31,814 INFO L268 CegarLoopResult]: For program point L22-3(line 22) no Hoare annotation was computed. [2020-09-25 14:29:31,814 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:29:31,814 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:29:31,814 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:29:31,815 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:29:31,815 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 14:29:31,815 INFO L268 CegarLoopResult]: For program point L32(lines 32 36) no Hoare annotation was computed. [2020-09-25 14:29:31,815 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-09-25 14:29:31,815 INFO L271 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-09-25 14:29:31,815 INFO L268 CegarLoopResult]: For program point L31-1(line 31) no Hoare annotation was computed. [2020-09-25 14:29:31,815 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 37) the Hoare annotation is: true [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point L31-2(line 31) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point L28(lines 28 30) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point L31-3(line 31) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 37) no Hoare annotation was computed. [2020-09-25 14:29:31,816 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 37) no Hoare annotation was computed. [2020-09-25 14:29:31,817 INFO L268 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-09-25 14:29:31,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:29:31 BoogieIcfgContainer [2020-09-25 14:29:31,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:29:31,835 INFO L168 Benchmark]: Toolchain (without parser) took 2902.97 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 104.0 MB in the beginning and 148.7 MB in the end (delta: -44.7 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:31,836 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 14:29:31,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.73 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:31,839 INFO L168 Benchmark]: Boogie Preprocessor took 114.02 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.0 MB in the beginning and 183.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:31,840 INFO L168 Benchmark]: RCFGBuilder took 285.59 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 171.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:31,847 INFO L168 Benchmark]: TraceAbstraction took 2212.14 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 170.6 MB in the beginning and 148.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:31,857 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 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.73 ms. Allocated memory is still 141.0 MB. Free memory was 103.3 MB in the beginning and 94.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.02 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.0 MB in the beginning and 183.6 MB in the end (delta: -89.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.59 ms. Allocated memory is still 204.5 MB. Free memory was 183.6 MB in the beginning and 171.3 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2212.14 ms. Allocated memory was 204.5 MB in the beginning and 234.4 MB in the end (delta: 29.9 MB). Free memory was 170.6 MB in the beginning and 148.7 MB in the end (delta: 22.0 MB). Peak memory consumption was 51.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 78 SDtfs, 9 SDslu, 301 SDs, 0 SdLazy, 79 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 4384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 14/20 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...